Update to R53 to not use nami tool

8f0fa320 · Austin Denton · 37db64f6 · 8f0fa320 · 8f0fa320 · 8f0fa320
Commit 8f0fa320 authored Apr 07, 2021 by Austin Denton
20 changed files
--- a/Dockerfile
+++ b/Dockerfile
+ARG BASE_REGISTRY=registry1.dsop.io
+ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
+ARG BASE_TAG=8.3
+FROM bitnami/airflow-worker:2.0.1-debian-10-r53 as base
+FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
+ARG BITNAMI_HOME=/opt/bitnami
+ARG BITNAMI_DIR=/bitnami
+ENV BITNAMI_PKG_EXTRA_DIRS="/opt/bitnami/airflow/dags" \
+    HOME="/" \
+    OS_ARCH="amd64" \
+    OS_FLAVOUR="debian-10" \
+    OS_NAME="linux"
+COPY --from=base ${BITNAMI_HOME} ${BITNAMI_HOME}
+COPY --from=base ${BITNAMI_DIR} ${BITNAMI_DIR}
+COPY prebuildfs /
+RUN dnf update -y --nodocs && \
+    dnf install -y curl tar gzip ca-certificates libxml2 \
+    procps glibc-locale-source glibc-langpack-en && \
+    dnf clean all && \
+    rm -rf /var/cache/dnf && \
+    localedef -c -f UTF-8 -i en_US en_US.UTF-8 && \
+    chmod g+rwX /opt/bitnami
+COPY rootfs /
+RUN /opt/bitnami/scripts/airflow/postunpack.sh
+COPY --from=base \
+     /lib/x86_64-linux-gnu/libbz2.so.1.0 \
+     /usr/lib64/
+ENV AIRFLOW_HOME="/opt/bitnami/airflow" \
+    BITNAMI_APP_NAME="airflow" \
+    BITNAMI_IMAGE_VERSION="2.0.1-debian-10-r53" \
+    LANG="en_US.UTF-8" \
+    LANGUAGE="en_US:en" \
+    LD_LIBRARY_PATH="/opt/bitnami/python/lib/:/opt/bitnami/airflow/venv/lib/python3.8/site-packages/numpy.libs/:$LD_LIBRARY_PATH" \
+    LIBNSS_WRAPPER_PATH="/opt/bitnami/common/lib/libnss_wrapper.so" \
+    LNAME="airflow" \
+    NSS_WRAPPER_GROUP="/opt/bitnami/airflow/nss_group" \
+    NSS_WRAPPER_PASSWD="/opt/bitnami/airflow/nss_passwd" \
+    PATH="/opt/bitnami/common/bin:/opt/bitnami/python/bin:/opt/bitnami/postgresql/bin:/opt/bitnami/airflow/venv/bin:$PATH"
+EXPOSE 8080
+USER 1001
+ENTRYPOINT [ "/opt/bitnami/scripts/airflow/entrypoint.sh" ]
+CMD [ "/opt/bitnami/scripts/airflow/run.sh" ]
--- a/LICENSE
+++ b/LICENSE
+Copyright (c) 2015-2021 Bitnami
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
--- a/README.md
+++ b/README.md
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
+---
+apiVersion: v1
+# The repository name in registry1, excluding /ironbank/
+name: "bitnami/airflow-worker"
+# List of tags to push for the repository in registry1
+# The most specific version should be the first tag and will be shown
+# on ironbank.dsop.io
+tags:
+- "2.0.1"
+# Build args passed to Dockerfile ARGs
+args:
+  BASE_IMAGE: "redhat/ubi/ubi8"
+  BASE_TAG: "8.3"
+# Docker image labels
+labels:
+  org.opencontainers.image.title: "airflow-worker"
+  ## Human-readable description of the software packaged in the image
+  org.opencontainers.image.description: "Apache Airflow is a tool to express and execute workflows as directed acyclic graphs (DAGs). It includes utilities to schedule tasks, monitor task progress and handle task dependencies."
+  ## License(s) under which contained software is distributed
+  org.opencontainers.image.licenses: "Apache-2.0"
+  ## URL to find more information on the image
+  org.opencontainers.image.url: "https://airflow.apache.org"
+  ## Name of the distributing entity, organization or individual
+  org.opencontainers.image.vendor: "Bitnami"
+  org.opencontainers.image.version: "2.0.1"
+  ## Keywords to help with search (ex. "cicd,gitops,golang")
+  mil.dso.ironbank.image.keywords: "workflows,dags,tasks"
+  ## This value can be "opensource" or "commercial"
+  mil.dso.ironbank.image.type: "opensource"
+  ## Product the image belongs to for grouping multiple images
+  mil.dso.ironbank.product.name: "Airflow"
+# List of resources to make available to the offline build context
+resources:
+- tag: bitnami/airflow-worker:2.0.1-debian-10-r53
+  url: docker://docker.io/bitnami/airflow@sha256:fdb55ad52b70ea398597634a5d2495c2c1d24935da25e242a08e853191bae38
+# List of project maintainers
+maintainers:
+- name: "Austin Denton"
+  username: "austindenton"
+  email: "austindenton@seed-innovations.com"
+  cht_member: false
\ No newline at end of file
--- a/prebuildfs/opt/bitnami/.bitnami_components.json
+++ b/prebuildfs/opt/bitnami/.bitnami_components.json
+{
+    "airflow": {
+        "arch": "amd64",
+        "digest": "d837c8af9305cfcbed7dd0493336ba0e38d7a3aa211192a8f05d117a7b7734ab",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "2.0.1-4"
+    },
+    "gosu": {
+        "arch": "amd64",
+        "digest": "4d858ac600c38af8de454c27b7f65c0074ec3069880cb16d259a6e40a46bbc50",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "1.12.0-2"
+    },
+    "ini-file": {
+        "arch": "amd64",
+        "digest": "d89528e5d733f34ae030984584659ff10a36370d40332bd8d41c047764d39cda",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "1.3.0-2"
+    },
+    "postgresql-client": {
+        "arch": "amd64",
+        "digest": "6ae2df74c4cc145690104c9bfbd4f9977cc00d26b3a010bb1eba74d92048485d",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "10.16.0-0"
+    },
+    "python": {
+        "arch": "amd64",
+        "digest": "4f1f6b81a3617dfaaa2c579510118ef6df07119977a5d6ca7df3cf485fca709a",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "3.8.9-0"
+    },
+    "wait-for-port": {
+        "arch": "amd64",
+        "digest": "7521d9a4f9e4e182bf32977e234026caa7b03759799868335bccb1edd8f8fd12",
+        "distro": "debian-10",
+        "type": "NAMI",
+        "version": "1.0.0-3"
+    }
+}
\ No newline at end of file
--- a/prebuildfs/opt/bitnami/licenses/licenses.txt
+++ b/prebuildfs/opt/bitnami/licenses/licenses.txt
+Bitnami containers ship with software bundles. You can find the licenses under:
+/opt/bitnami/nami/COPYING
+/opt/bitnami/[name-of-bundle]/licenses/[bundle-version].txt
--- a/prebuildfs/opt/bitnami/scripts/libbitnami.sh
+++ b/prebuildfs/opt/bitnami/scripts/libbitnami.sh
+#!/bin/bash
+#
+# Bitnami custom library
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+# Constants
+BOLD='\033[1m'
+# Functions
+########################
+# Print the welcome page
+# Globals:
+#   DISABLE_WELCOME_MESSAGE
+#   BITNAMI_APP_NAME
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+print_welcome_page() {
+    if [[ -z "${DISABLE_WELCOME_MESSAGE:-}" ]]; then
+        if [[ -n "$BITNAMI_APP_NAME" ]]; then
+            print_image_welcome_page
+        fi
+    fi
+}
+########################
+# Print the welcome page for a Bitnami Docker image
+# Globals:
+#   BITNAMI_APP_NAME
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+print_image_welcome_page() {
+    local github_url="https://github.com/bitnami/bitnami-docker-${BITNAMI_APP_NAME}"
+    log ""
+    log "${BOLD}Welcome to the Bitnami ${BITNAMI_APP_NAME} container${RESET}"
+    log "Subscribe to project updates by watching ${BOLD}${github_url}${RESET}"
+    log "Submit issues and feature requests at ${BOLD}${github_url}/issues${RESET}"
+    log ""
+}
--- a/prebuildfs/opt/bitnami/scripts/libcomponent.sh
+++ b/prebuildfs/opt/bitnami/scripts/libcomponent.sh
+#!/bin/bash
+#
+# Library for managing Bitnami components
+# Constants
+CACHE_ROOT="/tmp/bitnami/pkg/cache"
+DOWNLOAD_URL="https://downloads.bitnami.com/files/stacksmith"
+# Functions
+########################
+# Download and unpack a Bitnami package
+# Globals:
+#   OS_NAME
+#   OS_ARCH
+#   OS_FLAVOUR
+# Arguments:
+#   $1 - component's name
+#   $2 - component's version
+# Returns:
+#   None
+#########################
+component_unpack() {
+    local name="${1:?name is required}"
+    local version="${2:?version is required}"
+    local base_name="${name}-${version}-${OS_NAME}-${OS_ARCH}-${OS_FLAVOUR}"
+    local package_sha256=""
+    local directory="/opt/bitnami"
+    # Validate arguments
+    shift 2
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -c|--checksum)
+                shift
+                package_sha256="${1:?missing package checksum}"
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    echo "Downloading $base_name package"
+    if [ -f "${CACHE_ROOT}/${base_name}.tar.gz" ]; then
+        echo "${CACHE_ROOT}/${base_name}.tar.gz already exists, skipping download."
+        cp "${CACHE_ROOT}/${base_name}.tar.gz" .
+        rm "${CACHE_ROOT}/${base_name}.tar.gz"
+        if [ -f "${CACHE_ROOT}/${base_name}.tar.gz.sha256" ]; then
+            echo "Using the local sha256 from ${CACHE_ROOT}/${base_name}.tar.gz.sha256"
+            package_sha256="$(< "${CACHE_ROOT}/${base_name}.tar.gz.sha256")"
+            rm "${CACHE_ROOT}/${base_name}.tar.gz.sha256"
+        fi
+    else
+	curl --remote-name --silent "${DOWNLOAD_URL}/${base_name}.tar.gz"
+    fi
+    if [ -n "$package_sha256" ]; then
+        echo "Verifying package integrity"
+        echo "$package_sha256  ${base_name}.tar.gz" | sha256sum --check -
+    fi
+    tar --directory "${directory}" --extract --gunzip --file "${base_name}.tar.gz" --no-same-owner --strip-components=2 "${base_name}/files/"
+    rm "${base_name}.tar.gz"
+}
--- a/prebuildfs/opt/bitnami/scripts/libfile.sh
+++ b/prebuildfs/opt/bitnami/scripts/libfile.sh
+#!/bin/bash
+#
+# Library for managing files
+# Functions
+########################
+# Replace a regex in a file
+# Arguments:
+#   $1 - filename
+#   $2 - match regex
+#   $3 - substitute regex
+#   $4 - use POSIX regex. Default: true
+# Returns:
+#   None
+#########################
+replace_in_file() {
+    local filename="${1:?filename is required}"
+    local match_regex="${2:?match regex is required}"
+    local substitute_regex="${3:?substitute regex is required}"
+    local posix_regex=${4:-true}
+    local result
+    # We should avoid using 'sed in-place' substitutions
+    # 1) They are not compatible with files mounted from ConfigMap(s)
+    # 2) We found incompatibility issues with Debian10 and "in-place" substitutions
+    del=$'\001' # Use a non-printable character as a 'sed' delimiter to avoid issues
+    if [[ $posix_regex = true ]]; then
+        result="$(sed -E "s${del}${match_regex}${del}${substitute_regex}${del}g" "$filename")"
+    else
+        result="$(sed "s${del}${match_regex}${del}${substitute_regex}${del}g" "$filename")"
+    fi
+    echo "$result" > "$filename"
+}
+########################
+# Remove a line in a file based on a regex
+# Arguments:
+#   $1 - filename
+#   $2 - match regex
+#   $3 - use POSIX regex. Default: true
+# Returns:
+#   None
+#########################
+remove_in_file() {
+    local filename="${1:?filename is required}"
+    local match_regex="${2:?match regex is required}"
+    local posix_regex=${3:-true}
+    local result
+    # We should avoid using 'sed in-place' substitutions
+    # 1) They are not compatible with files mounted from ConfigMap(s)
+    # 2) We found incompatibility issues with Debian10 and "in-place" substitutions
+    if [[ $posix_regex = true ]]; then
+        result="$(sed -E "/$match_regex/d" "$filename")"
+    else
+        result="$(sed "/$match_regex/d" "$filename")"
+    fi
+    echo "$result" > "$filename"
+}
+########################
+# Appends text after the last line matching a pattern
+# Arguments:
+#   $1 - file
+#   $2 - match regex
+#   $3 - contents to add
+# Returns:
+#   None
+#########################
+append_file_after_last_match() {
+    local file="${1:?missing file}"
+    local match_regex="${2:?missing pattern}"
+    local value="${3:?missing value}"
+    # We read the file in reverse, replace the first match (0,/pattern/s) and then reverse the results again
+    result="$(tac "$file" | sed -E "0,/($match_regex)/s||${value}\n\1|" | tac)"
+    echo "$result" > "$file"
+}
--- a/prebuildfs/opt/bitnami/scripts/libfs.sh
+++ b/prebuildfs/opt/bitnami/scripts/libfs.sh
+#!/bin/bash
+#
+# Library for file system actions
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+# Functions
+########################
+# Ensure a file/directory is owned (user and group) but the given user
+# Arguments:
+#   $1 - filepath
+#   $2 - owner
+# Returns:
+#   None
+#########################
+owned_by() {
+    local path="${1:?path is missing}"
+    local owner="${2:?owner is missing}"
+    chown "$owner":"$owner" "$path"
+}
+########################
+# Ensure a directory exists and, optionally, is owned by the given user
+# Arguments:
+#   $1 - directory
+#   $2 - owner
+# Returns:
+#   None
+#########################
+ensure_dir_exists() {
+    local dir="${1:?directory is missing}"
+    local owner="${2:-}"
+    mkdir -p "${dir}"
+    if [[ -n $owner ]]; then
+        owned_by "$dir" "$owner"
+    fi
+}
+########################
+# Checks whether a directory is empty or not
+# arguments:
+#   $1 - directory
+# returns:
+#   boolean
+#########################
+is_dir_empty() {
+    local dir="${1:?missing directory}"
+    if [[ ! -e "$dir" ]] || [[ -z "$(ls -A "$dir")" ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Checks whether a mounted directory is empty or not
+# arguments:
+#   $1 - directory
+# returns:
+#   boolean
+#########################
+is_mounted_dir_empty() {
+    local dir="${1:?missing directory}"
+    if is_dir_empty "$dir" || find "$dir" -mindepth 1 -maxdepth 1 -not -name ".snapshot" -not -name "lost+found" -exec false {} +; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Checks whether a file can be written to or not
+# arguments:
+#   $1 - file
+# returns:
+#   boolean
+#########################
+is_file_writable() {
+    local file="${1:?missing file}"
+    local dir
+    dir="$(dirname "$file")"
+    if [[ ( -f "$file" && -w "$file" ) || ( ! -f "$file" && -d "$dir" && -w "$dir" ) ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Relativize a path
+# arguments:
+#   $1 - path
+#   $2 - base
+# returns:
+#   None
+#########################
+relativize() {
+    local -r path="${1:?missing path}"
+    local -r base="${2:?missing base}"
+    pushd "$base" >/dev/null || exit
+    realpath -q --no-symlinks --relative-base="$base" "$path" | sed -e 's|^/$|.|' -e 's|^/||'
+    popd >/dev/null || exit
+}
+########################
+# Configure permisions and ownership recursively
+# Globals:
+#   None
+# Arguments:
+#   $1 - paths (as a string).
+# Flags:
+#   -f|--file-mode - mode for directories.
+#   -d|--dir-mode - mode for files.
+#   -u|--user - user
+#   -g|--group - group
+# Returns:
+#   None
+#########################
+configure_permissions_ownership() {
+    local -r paths="${1:?paths is missing}"
+    local dir_mode=""
+    local file_mode=""
+    local user=""
+    local group=""
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -f|--file-mode)
+                shift
+                file_mode="${1:?missing mode for files}"
+                ;;
+            -d|--dir-mode)
+                shift
+                dir_mode="${1:?missing mode for directories}"
+                ;;
+            -u|--user)
+                shift
+                user="${1:?missing user}"
+                ;;
+            -g|--group)
+                shift
+                group="${1:?missing group}"
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a filepaths <<< "$paths"
+    for p in "${filepaths[@]}"; do
+        if [[ -e "$p" ]]; then
+            if [[ -n $dir_mode ]]; then
+                find -L "$p" -type d -exec chmod "$dir_mode" {} \;
+            fi
+            if [[ -n $file_mode ]]; then
+                find -L "$p" -type f -exec chmod "$file_mode" {} \;
+            fi
+            if [[ -n $user ]] && [[ -n $group ]]; then
+                chown -LR "$user":"$group" "$p"
+            elif [[ -n $user ]] && [[ -z $group ]]; then
+                chown -LR "$user" "$p"
+            elif [[ -z $user ]] && [[ -n $group ]]; then
+                chgrp -LR "$group" "$p"
+            fi
+        else
+            stderr_print "$p does not exist"
+        fi
+    done
+}
--- a/prebuildfs/opt/bitnami/scripts/libhook.sh
+++ b/prebuildfs/opt/bitnami/scripts/libhook.sh
+#!/bin/bash
+#
+# Library to use for scripts expected to be used as Kubernetes lifecycle hooks
+# shellcheck disable=SC1091
+# Load generic libraries
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libos.sh
+# Override functions that log to stdout/stderr of the current process, so they print to process 1
+for function_to_override in stderr_print debug_execute; do
+    # Output is sent to output of process 1 and thus end up in the container log
+    # The hook output in general isn't saved
+    eval "$(declare -f "$function_to_override") >/proc/1/fd/1 2>/proc/1/fd/2"
+done
--- a/prebuildfs/opt/bitnami/scripts/liblog.sh
+++ b/prebuildfs/opt/bitnami/scripts/liblog.sh
+#!/bin/bash
+#
+# Library for logging functions
+# Constants
+RESET='\033[0m'
+RED='\033[38;5;1m'
+GREEN='\033[38;5;2m'
+YELLOW='\033[38;5;3m'
+MAGENTA='\033[38;5;5m'
+CYAN='\033[38;5;6m'
+# Functions
+########################
+# Print to STDERR
+# Arguments:
+#   Message to print
+# Returns:
+#   None
+#########################
+stderr_print() {
+    # 'is_boolean_yes' is defined in libvalidations.sh, but depends on this file so we cannot source it
+    local bool="${BITNAMI_QUIET:-false}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if ! [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        printf "%b\\n" "${*}" >&2
+    fi
+}
+########################
+# Log message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+log() {
+    stderr_print "${CYAN}${MODULE:-} ${MAGENTA}$(date "+%T.%2N ")${RESET}${*}"
+}
+########################
+# Log an 'info' message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+info() {
+    log "${GREEN}INFO ${RESET} ==> ${*}"
+}
+########################
+# Log message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+warn() {
+    log "${YELLOW}WARN ${RESET} ==> ${*}"
+}
+########################
+# Log an 'error' message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+error() {
+    log "${RED}ERROR${RESET} ==> ${*}"
+}
+########################
+# Log a 'debug' message
+# Globals:
+#   BITNAMI_DEBUG
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+debug() {
+    # 'is_boolean_yes' is defined in libvalidations.sh, but depends on this file so we cannot source it
+    local bool="${BITNAMI_DEBUG:-false}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        log "${MAGENTA}DEBUG${RESET} ==> ${*}"
+    fi
+}
+########################
+# Indent a string
+# Arguments:
+#   $1 - string
+#   $2 - number of indentation characters (default: 4)
+#   $3 - indentation character (default: " ")
+# Returns:
+#   None
+#########################
+indent() {
+    local string="${1:-}"
+    local num="${2:?missing num}"
+    local char="${3:-" "}"
+    # Build the indentation unit string
+    local indent_unit=""
+    for ((i = 0; i < num; i++)); do
+        indent_unit="${indent_unit}${char}"
+    done
+    echo "$string" | sed "s/^/${indent_unit}/"
+}
--- a/prebuildfs/opt/bitnami/scripts/libnet.sh
+++ b/prebuildfs/opt/bitnami/scripts/libnet.sh
+#!/bin/bash
+#
+# Library for network functions
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+# Functions
+########################
+# Resolve IP address for a host/domain (i.e. DNS lookup)
+# Arguments:
+#   $1 - Hostname to resolve
+#   $2 - IP address version (v4, v6), leave empty for resolving to any version
+# Returns:
+#   IP
+#########################
+dns_lookup() {
+    local host="${1:?host is missing}"
+    local ip_version="${2:-}"
+    getent "ahosts${ip_version}" "$host" | awk '/STREAM/ {print $1 }' | head -n 1
+}
+#########################
+# Wait for a hostname and return the IP
+# Arguments:
+#   $1 - hostname
+#   $2 - number of retries
+#   $3 - seconds to wait between retries
+# Returns:
+#   - IP address that corresponds to the hostname
+#########################
+wait_for_dns_lookup() {
+    local hostname="${1:?hostname is missing}"
+    local retries="${2:-5}"
+    local seconds="${3:-1}"
+    check_host() {
+        if [[ $(dns_lookup "$hostname") == "" ]]; then
+            false
+        else
+            true
+        fi
+    }
+    # Wait for the host to be ready
+    retry_while "check_host ${hostname}" "$retries" "$seconds"
+    dns_lookup "$hostname"
+}
+########################
+# Get machine's IP
+# Arguments:
+#   None
+# Returns:
+#   Machine IP
+#########################
+get_machine_ip() {
+    local -a ip_addresses
+    local hostname
+    hostname="$(hostname)"
+    read -r -a ip_addresses <<< "$(dns_lookup "$hostname" | xargs echo)"
+    if [[ "${#ip_addresses[@]}" -gt 1 ]]; then
+        warn "Found more than one IP address associated to hostname ${hostname}: ${ip_addresses[*]}, will use ${ip_addresses[0]}"
+    elif [[ "${#ip_addresses[@]}" -lt 1 ]]; then
+        error "Could not find any IP address associated to hostname ${hostname}"
+        exit 1
+    fi
+    echo "${ip_addresses[0]}"
+}
+########################
+# Check if the provided argument is a resolved hostname
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_hostname_resolved() {
+    local -r host="${1:?missing value}"
+    if [[ -n "$(dns_lookup "$host")" ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Parse URL
+# Globals:
+#   None
+# Arguments:
+#   $1 - uri - String
+#   $2 - component to obtain. Valid options (scheme, authority, userinfo, host, port, path, query or fragment) - String
+# Returns:
+#   String
+parse_uri() {
+    local uri="${1:?uri is missing}"
+    local component="${2:?component is missing}"
+    # Solution based on https://tools.ietf.org/html/rfc3986#appendix-B with
+    # additional sub-expressions to split authority into userinfo, host and port
+    # Credits to Patryk Obara (see https://stackoverflow.com/a/45977232/6694969)
+    local -r URI_REGEX='^(([^:/?#]+):)?(//((([^@/?#]+)@)?([^:/?#]+)(:([0-9]+))?))?(/([^?#]*))?(\?([^#]*))?(#(.*))?'
+    #                    ||            |  |||            |         | |            | |         |  |        | |
+    #                    |2 scheme     |  ||6 userinfo   7 host    | 9 port       | 11 rpath  |  13 query | 15 fragment
+    #                    1 scheme:     |  |5 userinfo@             8 :...         10 path     12 ?...     14 #...
+    #                                  |  4 authority
+    #                                  3 //...
+    local index=0
+    case "$component" in
+        scheme)
+            index=2
+            ;;
+        authority)
+            index=4
+            ;;
+        userinfo)
+            index=6
+            ;;
+        host)
+            index=7
+            ;;
+        port)
+            index=9
+            ;;
+        path)
+            index=10
+            ;;
+        query)
+            index=13
+            ;;
+        fragment)
+            index=14
+            ;;
+        *)
+            stderr_print "unrecognized component $component"
+            return 1
+            ;;
+    esac
+    [[ "$uri" =~ $URI_REGEX ]] && echo "${BASH_REMATCH[${index}]}"
+}
--- a/prebuildfs/opt/bitnami/scripts/libos.sh
+++ b/prebuildfs/opt/bitnami/scripts/libos.sh
+#!/bin/bash
+#
+# Library for operating system actions
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libfs.sh
+# Functions
+########################
+# Check if an user exists in the system
+# Arguments:
+#   $1 - user
+# Returns:
+#   Boolean
+#########################
+user_exists() {
+    local user="${1:?user is missing}"
+    id "$user" >/dev/null 2>&1
+}
+########################
+# Check if a group exists in the system
+# Arguments:
+#   $1 - group
+# Returns:
+#   Boolean
+#########################
+group_exists() {
+    local group="${1:?group is missing}"
+    getent group "$group" >/dev/null 2>&1
+}
+########################
+# Create a group in the system if it does not exist already
+# Arguments:
+#   $1 - group
+# Flags:
+#   -s|--system - Whether to create new user as system user (uid <= 999)
+# Returns:
+#   None
+#########################
+ensure_group_exists() {
+    local group="${1:?group is missing}"
+    local is_system_user=false
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -s|--system)
+                is_system_user=true
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    if ! group_exists "$group"; then
+        local -a args=("$group")
+        $is_system_user && args+=("--system")
+        groupadd "${args[@]}" >/dev/null 2>&1
+    fi
+}
+########################
+# Create an user in the system if it does not exist already
+# Arguments:
+#   $1 - user
+# Flags:
+#   -g|--group - the group the new user should belong to
+#   -h|--home - the home directory for the new user
+#   -s|--system - whether to create new user as system user (uid <= 999)
+# Returns:
+#   None
+#########################
+ensure_user_exists() {
+    local user="${1:?user is missing}"
+    local group=""
+    local home=""
+    local is_system_user=false
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -g|--group)
+                shift
+                group="${1:?missing group}"
+                ;;
+            -h|--home)
+                shift
+                home="${1:?missing home directory}"
+                ;;
+            -s|--system)
+                is_system_user=true
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    if ! user_exists "$user"; then
+        local -a user_args=("-N" "$user")
+        $is_system_user && user_args+=("--system")
+        useradd "${user_args[@]}" >/dev/null 2>&1
+    fi
+    if [[ -n "$group" ]]; then
+        local -a group_args=("$group")
+        $is_system_user && group_args+=("--system")
+        ensure_group_exists "${group_args[@]}"
+        usermod -g "$group" "$user" >/dev/null 2>&1
+    fi
+    if [[ -n "$home" ]]; then
+        mkdir -p "$home"
+        usermod -d "$home" "$user" >/dev/null 2>&1
+        configure_permissions_ownership "$home" -d "775" -f "664" -u "$user" -g "$group"
+    fi
+}
+########################
+# Check if the script is currently running as root
+# Arguments:
+#   $1 - user
+#   $2 - group
+# Returns:
+#   Boolean
+#########################
+am_i_root() {
+    if [[ "$(id -u)" = "0" ]]; then
+        true
+    else
+	false
+    fi
+}
+########################
+# Get total memory available
+# Arguments:
+#   None
+# Returns:
+#   Memory in bytes
+#########################
+get_total_memory() {
+    echo $(($(grep MemTotal /proc/meminfo | awk '{print $2}') / 1024))
+}
+########################
+# Get machine size depending on specified memory
+# Globals:
+#   None
+# Arguments:
+#   None
+# Flags:
+#   --memory - memory size (optional)
+# Returns:
+#   Detected instance size
+#########################
+get_machine_size() {
+    local memory=""
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --memory)
+                shift
+                memory="${1:?missing memory}"
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    if [[ -z "$memory" ]]; then
+        debug "Memory was not specified, detecting available memory automatically"
+        memory="$(get_total_memory)"
+    fi
+    sanitized_memory=$(convert_to_mb "$memory")
+    if [[ "$sanitized_memory" -gt 26000 ]]; then
+        echo 2xlarge
+    elif [[ "$sanitized_memory" -gt 13000 ]]; then
+        echo xlarge
+    elif [[ "$sanitized_memory" -gt 6000 ]]; then
+        echo large
+    elif [[ "$sanitized_memory" -gt 3000 ]]; then
+        echo medium
+    elif [[ "$sanitized_memory" -gt 1500 ]]; then
+        echo small
+    else
+        echo micro
+    fi
+}
+########################
+# Get machine size depending on specified memory
+# Globals:
+#   None
+# Arguments:
+#   $1 - memory size (optional)
+# Returns:
+#   Detected instance size
+#########################
+get_supported_machine_sizes() {
+    echo micro small medium large xlarge 2xlarge
+}
+########################
+# Convert memory size from string to amount of megabytes (i.e. 2G -> 2048)
+# Globals:
+#   None
+# Arguments:
+#   $1 - memory size
+# Returns:
+#   Result of the conversion
+#########################
+convert_to_mb() {
+    local amount="${1:-}"
+    if [[ $amount =~ ^([0-9]+)(m|M|g|G) ]]; then
+        size="${BASH_REMATCH[1]}"
+        unit="${BASH_REMATCH[2]}"
+        if [[ "$unit" = "g" || "$unit" = "G" ]]; then
+           amount="$((size * 1024))"
+        else
+            amount="$size"
+        fi
+    fi
+    echo "$amount"
+}
+#########################
+# Redirects output to /dev/null if debug mode is disabled
+# Globals:
+#   BITNAMI_DEBUG
+# Arguments:
+#   $@ - Command to execute
+# Returns:
+#   None
+#########################
+debug_execute() {
+    if ${BITNAMI_DEBUG:-false}; then
+        "$@"
+    else
+        "$@" >/dev/null 2>&1
+    fi
+}
+########################
+# Retries a command a given number of times
+# Arguments:
+#   $1 - cmd (as a string)
+#   $2 - max retries. Default: 12
+#   $3 - sleep between retries (in seconds). Default: 5
+# Returns:
+#   Boolean
+#########################
+retry_while() {
+    local cmd="${1:?cmd is missing}"
+    local retries="${2:-12}"
+    local sleep_time="${3:-5}"
+    local return_value=1
+    read -r -a command <<< "$cmd"
+    for ((i = 1 ; i <= retries ; i+=1 )); do
+        "${command[@]}" && return_value=0 && break
+        sleep "$sleep_time"
+    done
+    return $return_value
+}
+########################
+# Generate a random string
+# Arguments:
+#   -t|--type - String type (ascii, alphanumeric, numeric), defaults to ascii
+#   -c|--count - Number of characters, defaults to 32
+# Arguments:
+#   None
+# Returns:
+#   None
+# Returns:
+#   String
+#########################
+generate_random_string() {
+    local type="ascii"
+    local count="32"
+    local filter
+    local result
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            -t|--type)
+                shift
+                type="$1"
+                ;;
+            -c|--count)
+                shift
+                count="$1"
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    # Validate type
+    case "$type" in
+        ascii)
+            filter="[:print:]"
+            ;;
+        alphanumeric)
+            filter="a-zA-Z0-9"
+            ;;
+        numeric)
+            filter="0-9"
+            ;;
+        *)
+        echo "Invalid type ${type}" >&2
+        return 1
+    esac
+    # Obtain count + 10 lines from /dev/urandom to ensure that the resulting string has the expected size
+    # Note there is a very small chance of strings starting with EOL character
+    # Therefore, the higher amount of lines read, this will happen less frequently
+    result="$(head -n "$((count + 10))" /dev/urandom | tr -dc "$filter" | head -c "$count")"
+    echo "$result"
+}
+########################
+# Create md5 hash from a string
+# Arguments:
+#   $1 - string
+# Returns:
+#   md5 hash - string
+#########################
+generate_md5_hash() {
+  local -r str="${1:?missing input string}"
+  echo -n "$str" | md5sum | awk '{print $1}'
+}
--- a/prebuildfs/opt/bitnami/scripts/libpersistence.sh
+++ b/prebuildfs/opt/bitnami/scripts/libpersistence.sh
+#!/bin/bash
+#
+# Bitnami persistence library
+# Used for bringing persistence capabilities to applications that don't have clear separation of data and logic
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/libfs.sh
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libversion.sh
+# Functions
+########################
+# Persist an application directory
+# Globals:
+#   BITNAMI_ROOT_DIR
+#   BITNAMI_VOLUME_DIR
+# Arguments:
+#   $1 - App folder name
+#   $2 - List of app files to persist
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+persist_app() {
+    local -r app="${1:?missing app}"
+    local -a files_to_restore
+    read -r -a files_to_persist <<< "$2"
+    local -r install_dir="${BITNAMI_ROOT_DIR}/${app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    # Persist the individual files
+    if [[ "${#files_to_persist[@]}" -lt 0 ]]; then
+        warn "No files are configured to be persisted"
+        return
+    fi
+    pushd "$install_dir" >/dev/null || exit
+    local file_to_persist_relative file_to_persist_destination file_to_persist_destination_folder
+    local -r tmp_file="/tmp/perms.acl"
+    for file_to_persist in "${files_to_persist[@]}"; do
+        if [[ ! -f "$file_to_persist" && ! -d "$file_to_persist" ]]; then
+            error "Cannot persist '${file_to_persist}' because it does not exist"
+            return 1
+        fi
+        file_to_persist_relative="$(relativize "$file_to_persist" "$install_dir")"
+        file_to_persist_destination="${persist_dir}/${file_to_persist_relative}"
+        file_to_persist_destination_folder="$(dirname "$file_to_persist_destination")"
+        # Get original permissions for existing files, which will be applied later
+        # Exclude the root directory with 'sed', to avoid issues when copying the entirety of it to a volume
+        getfacl -R "$file_to_persist_relative" | sed -E '/# file: (\..+|[^.])/,$!d' > "$tmp_file"
+        # Copy directories to the volume
+        ensure_dir_exists "$file_to_persist_destination_folder"
+        cp -Lr --preserve=links "$file_to_persist_relative" "$file_to_persist_destination_folder"
+        # Restore permissions
+        pushd "$persist_dir" >/dev/null || exit
+        if am_i_root; then
+            setfacl --restore="$tmp_file"
+        else
+            # When running as non-root, don't change ownership
+            setfacl --restore=<(grep -E -v '^# (owner|group):' "$tmp_file")
+        fi
+        popd >/dev/null || exit
+    done
+    popd >/dev/null || exit
+    rm -f "$tmp_file"
+    # Install the persisted files into the installation directory, via symlinks
+    restore_persisted_app "$@"
+}
+########################
+# Restore a persisted application directory
+# Globals:
+#   BITNAMI_ROOT_DIR
+#   BITNAMI_VOLUME_DIR
+#   FORCE_MAJOR_UPGRADE
+# Arguments:
+#   $1 - App folder name
+#   $2 - List of app files to restore
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+restore_persisted_app() {
+    local -r app="${1:?missing app}"
+    local -a files_to_restore
+    read -r -a files_to_restore <<< "$2"
+    local -r install_dir="${BITNAMI_ROOT_DIR}/${app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    # Restore the individual persisted files
+    if [[ "${#files_to_restore[@]}" -lt 0 ]]; then
+        warn "No persisted files are configured to be restored"
+        return
+    fi
+    local file_to_restore_relative file_to_restore_origin file_to_restore_destination
+    for file_to_restore in "${files_to_restore[@]}"; do
+        file_to_restore_relative="$(relativize "$file_to_restore" "$install_dir")"
+        # We use 'realpath --no-symlinks' to ensure that the case of '.' is covered and the directory is removed
+        file_to_restore_origin="$(realpath --no-symlinks "${install_dir}/${file_to_restore_relative}")"
+        file_to_restore_destination="$(realpath --no-symlinks "${persist_dir}/${file_to_restore_relative}")"
+        rm -rf "$file_to_restore_origin"
+        ln -sfn "$file_to_restore_destination" "$file_to_restore_origin"
+    done
+}
+########################
+# Check if an application directory was already persisted
+# Globals:
+#   BITNAMI_VOLUME_DIR
+# Arguments:
+#   $1 - App folder name
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+is_app_initialized() {
+    local -r app="${1:?missing app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    if ! is_mounted_dir_empty "$persist_dir"; then
+        true
+    else
+        false
+    fi
+}
--- a/prebuildfs/opt/bitnami/scripts/libservice.sh
+++ b/prebuildfs/opt/bitnami/scripts/libservice.sh
+#!/bin/bash
+#
+# Library for managing services
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/libvalidations.sh
+. /opt/bitnami/scripts/liblog.sh
+# Functions
+########################
+# Read the provided pid file and returns a PID
+# Arguments:
+#   $1 - Pid file
+# Returns:
+#   PID
+#########################
+get_pid_from_file() {
+    local pid_file="${1:?pid file is missing}"
+    if [[ -f "$pid_file" ]]; then
+        if [[ -n "$(< "$pid_file")" ]] && [[ "$(< "$pid_file")" -gt 0 ]]; then
+            echo "$(< "$pid_file")"
+        fi
+    fi
+}
+########################
+# Check if a provided PID corresponds to a running service
+# Arguments:
+#   $1 - PID
+# Returns:
+#   Boolean
+#########################
+is_service_running() {
+    local pid="${1:?pid is missing}"
+    kill -0 "$pid" 2>/dev/null
+}
+########################
+# Stop a service by sending a termination signal to its pid
+# Arguments:
+#   $1 - Pid file
+#   $2 - Signal number (optional)
+# Returns:
+#   None
+#########################
+stop_service_using_pid() {
+    local pid_file="${1:?pid file is missing}"
+    local signal="${2:-}"
+    local pid
+    pid="$(get_pid_from_file "$pid_file")"
+    [[ -z "$pid" ]] || ! is_service_running "$pid" && return
+    if [[ -n "$signal" ]]; then
+        kill "-${signal}" "$pid"
+    else
+        kill "$pid"
+    fi
+    local counter=10
+    while [[ "$counter" -ne 0 ]] && is_service_running "$pid"; do
+        sleep 1
+        counter=$((counter - 1))
+    done
+}
+########################
+# Start cron daemon
+# Arguments:
+#   None
+# Returns:
+#   true if started correctly, false otherwise
+#########################
+cron_start() {
+    if [[ -x "/usr/sbin/cron" ]]; then
+        /usr/sbin/cron
+    elif [[ -x "/usr/sbin/crond" ]]; then
+        /usr/sbin/crond
+    else
+        false
+    fi
+}
+########################
+# Generate a cron configuration file for a given service
+# Arguments:
+#   $1 - Service name
+#   $2 - Command
+# Flags:
+#   --run-as - User to run as (default: root)
+#   --schedule - Cron schedule configuration (default: * * * * *)
+# Returns:
+#   None
+#########################
+generate_cron_conf() {
+    local service_name="${1:?service name is missing}"
+    local cmd="${2:?command is missing}"
+    local run_as="root"
+    local schedule="* * * * *"
+    local clean="true"
+    local clean="true"
+    # Parse optional CLI flags
+    shift 2
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --run-as)
+                shift
+                run_as="$1"
+                ;;
+            --schedule)
+                shift
+                schedule="$1"
+                ;;
+            --no-clean)
+                clean="false"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    mkdir -p /etc/cron.d
+    if "$clean"; then
+        echo "${schedule} ${run_as} ${cmd}" > /etc/cron.d/"$service_name"
+    else
+        echo "${schedule} ${run_as} ${cmd}" >> /etc/cron.d/"$service_name"
+    fi
+}
+########################
+# Generate a monit configuration file for a given service
+# Arguments:
+#   $1 - Service name
+#   $2 - Pid file
+#   $3 - Start command
+#   $4 - Stop command
+# Flags:
+#   --disabled - Whether to disable the monit configuration
+# Returns:
+#   None
+#########################
+generate_monit_conf() {
+    local service_name="${1:?service name is missing}"
+    local pid_file="${2:?pid file is missing}"
+    local start_command="${3:?start command is missing}"
+    local stop_command="${4:?stop command is missing}"
+    local monit_conf_dir="/etc/monit/conf.d"
+    local disabled="no"
+    # Parse optional CLI flags
+    shift 4
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --disabled)
+                shift
+                disabled="$1"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    is_boolean_yes "$disabled" && conf_suffix=".disabled"
+    mkdir -p "$monit_conf_dir"
+    cat >"${monit_conf_dir}/${service_name}.conf${conf_suffix:-}" <<EOF
+check process ${service_name}
+  with pidfile "${pid_file}"
+  start program = "${start_command}" with timeout 90 seconds
+  stop program = "${stop_command}" with timeout 90 seconds
+EOF
+}
+########################
+# Generate a logrotate configuration file
+# Arguments:
+#   $1 - Service name
+#   $2 - Log files pattern
+# Flags:
+#   --period - Period
+#   --rotations - Number of rotations to store
+#   --extra - Extra options (Optional)
+# Returns:
+#   None
+#########################
+generate_logrotate_conf() {
+    local service_name="${1:?service name is missing}"
+    local log_path="${2:?log path is missing}"
+    local period="weekly"
+    local rotations="150"
+    local extra=""
+    local logrotate_conf_dir="/etc/logrotate.d"
+    local var_name
+    # Parse optional CLI flags
+    shift 2
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --period|--rotations|--extra)
+                var_name="$(echo "$1" | sed -e "s/^--//" -e "s/-/_/g")"
+                shift
+                declare "$var_name"="${1:?"$var_name" is missing}"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    mkdir -p "$logrotate_conf_dir"
+    cat <<EOF | sed '/^\s*$/d' >"${logrotate_conf_dir}/${service_name}"
+${log_path} {
+  ${period}
+  rotate ${rotations}
+  dateext
+  compress
+  copytruncate
+  missingok
+$(indent "$extra" 2)
+}
+EOF
+}
--- a/prebuildfs/opt/bitnami/scripts/libvalidations.sh
+++ b/prebuildfs/opt/bitnami/scripts/libvalidations.sh
+#!/bin/bash
+#
+# Validation functions library
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+# Functions
+########################
+# Check if the provided argument is an integer
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_int() {
+    local -r int="${1:?missing value}"
+    if [[ "$int" =~ ^-?[0-9]+ ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Check if the provided argument is a positive integer
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_positive_int() {
+    local -r int="${1:?missing value}"
+    if is_int "$int" && (( "${int}" >= 0 )); then
+        true
+    else
+        false
+    fi
+}
+########################
+# Check if the provided argument is a boolean or is the string 'yes/true'
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_boolean_yes() {
+    local -r bool="${1:-}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Check if the provided argument is a boolean yes/no value
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_yes_no_value() {
+    local -r bool="${1:-}"
+    if [[ "$bool" =~ ^(yes|no)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Check if the provided argument is a boolean true/false value
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_true_false_value() {
+    local -r bool="${1:-}"
+    if [[ "$bool" =~ ^(true|false)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Check if the provided argument is an empty string or not defined
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_empty_value() {
+    local -r val="${1:-}"
+    if [[ -z "$val" ]]; then
+        true
+    else
+        false
+    fi
+}
+########################
+# Validate if the provided argument is a valid port
+# Arguments:
+#   $1 - Port to validate
+# Returns:
+#   Boolean and error message
+#########################
+validate_port() {
+    local value
+    local unprivileged=0
+    # Parse flags
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            -unprivileged)
+                unprivileged=1
+                ;;
+            --)
+                shift
+                break
+                ;;
+            -*)
+                stderr_print "unrecognized flag $1"
+                return 1
+                ;;
+            *)
+                break
+                ;;
+        esac
+        shift
+    done
+    if [[ "$#" -gt 1 ]]; then
+        echo "too many arguments provided"
+        return 2
+    elif [[ "$#" -eq 0 ]]; then
+        stderr_print "missing port argument"
+        return 1
+    else
+        value=$1
+    fi
+    if [[ -z "$value" ]]; then
+        echo "the value is empty"
+        return 1
+    else
+        if ! is_int "$value"; then
+            echo "value is not an integer"
+            return 2
+        elif [[ "$value" -lt 0 ]]; then
+            echo "negative value provided"
+            return 2
+        elif [[ "$value" -gt 65535 ]]; then
+            echo "requested port is greater than 65535"
+            return 2
+        elif [[ "$unprivileged" = 1 && "$value" -lt 1024 ]]; then
+            echo "privileged port requested"
+            return 3
+        fi
+    fi
+}
+########################
+# Validate if the provided argument is a valid IPv4 address
+# Arguments:
+#   $1 - IP to validate
+# Returns:
+#   Boolean
+#########################
+validate_ipv4() {
+    local ip="${1:?ip is missing}"
+    local stat=1
+    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+	read -r -a ip_array <<< "$(tr '.' ' ' <<< "$ip")"
+        [[ ${ip_array[0]} -le 255 && ${ip_array[1]} -le 255 \
+            && ${ip_array[2]} -le 255 && ${ip_array[3]} -le 255 ]]
+        stat=$?
+    fi
+    return $stat
+}
+########################
+# Validate a string format
+# Arguments:
+#   $1 - String to validate
+# Returns:
+#   Boolean
+#########################
+validate_string() {
+    local string
+    local min_length=-1
+    local max_length=-1
+    # Parse flags
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -min-length)
+                shift
+                min_length=${1:-}
+                ;;
+            -max-length)
+                shift
+                max_length=${1:-}
+                ;;
+            --)
+                shift
+                break
+                ;;
+            -*)
+                stderr_print "unrecognized flag $1"
+                return 1
+                ;;
+            *)
+                break
+                ;;
+        esac
+        shift
+    done
+    if [ "$#" -gt 1 ]; then
+        stderr_print "too many arguments provided"
+        return 2
+    elif [ "$#" -eq 0 ]; then
+        stderr_print "missing string"
+        return 1
+    else
+        string=$1
+    fi
+    if [[ "$min_length" -ge 0 ]] && [[ "${#string}" -lt "$min_length" ]]; then
+        echo "string length is less than $min_length"
+        return 1
+    fi
+    if [[ "$max_length" -ge 0 ]] && [[ "${#string}" -gt "$max_length" ]]; then
+        echo "string length is great than $max_length"
+        return 1
+    fi
+}
--- a/prebuildfs/opt/bitnami/scripts/libversion.sh
+++ b/prebuildfs/opt/bitnami/scripts/libversion.sh
+#!/bin/bash
+#
+# Library for managing versions strings
+# shellcheck disable=SC1091
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+# Functions
+########################
+# Gets semantic version 
+# Arguments:
+#   $1 - version: string to extract major.minor.patch
+#   $2 - section: 1 to extract major, 2 to extract minor, 3 to extract patch
+# Returns:
+#   array with the major, minor and release
+#########################
+get_sematic_version () {
+    local version="${1:?version is required}"
+    local section="${2:?section is required}"
+    local -a version_sections
+    #Regex to parse versions: x.y.z
+    local -r regex='([0-9]+)(\.([0-9]+)(\.([0-9]+))?)?'
+    if [[ "$version" =~ $regex ]]; then
+        local i=1
+        local j=1
+        local n=${#BASH_REMATCH[*]}
+        while [[ $i -lt $n ]]; do
+            if [[ -n "${BASH_REMATCH[$i]}" ]] && [[ "${BASH_REMATCH[$i]:0:1}" != '.' ]];  then
+                version_sections[$j]=${BASH_REMATCH[$i]}
+                ((j++))
+            fi
+            ((i++))
+        done
+        local number_regex='^[0-9]+$'
+        if [[ "$section" =~ $number_regex ]] && (( $section > 0 )) && (( $section <= 3 )); then
+             echo "${version_sections[$section]}"
+             return
+        else
+            stderr_print "Section allowed values are: 1, 2, and 3"
+            return 1
+        fi
+    fi
+}
--- a/prebuildfs/opt/bitnami/scripts/libwebserver.sh
+++ b/prebuildfs/opt/bitnami/scripts/libwebserver.sh
+#!/bin/bash
+#
+# Bitnami web server handler library
+# shellcheck disable=SC1090,SC1091
+# Load generic libraries
+. /opt/bitnami/scripts/liblog.sh
+########################
+# Execute a command (or list of commands) with the web server environment and library loaded
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_execute() {
+    local -r web_server="${1:?missing web server}"
+    shift
+    # Run program in sub-shell to avoid web server environment getting loaded when not necessary
+    (
+        . "/opt/bitnami/scripts/lib${web_server}.sh"
+        . "/opt/bitnami/scripts/${web_server}-env.sh"
+        "$@"
+    )
+}
+########################
+# Prints the list of enabled web servers
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_list() {
+    local -r -a supported_web_servers=(apache nginx)
+    local -a existing_web_servers=()
+    for web_server in "${supported_web_servers[@]}"; do
+        [[ -f "/opt/bitnami/scripts/${web_server}-env.sh" ]] && existing_web_servers+=("$web_server")
+    done
+    echo "${existing_web_servers[@]:-}"
+}
+########################
+# Prints the currently-enabled web server type (only one, in order of preference)
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_type() {
+    local -a web_servers
+    read -r -a web_servers <<< "$(web_server_list)"
+    echo "${web_servers[0]:-}"
+}
+########################
+# Validate that a supported web server is configured
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_validate() {
+    local error_code=0
+    local supported_web_servers=("apache" "nginx")
+    # Auxiliary functions
+    print_validation_error() {
+        error "$1"
+        error_code=1
+    }
+    if [[ -z "$(web_server_type)" || ! " ${supported_web_servers[*]} " == *" $(web_server_type) "* ]]; then
+        print_validation_error "Could not detect any supported web servers. It must be one of: ${supported_web_servers[*]}"
+    elif ! web_server_execute "$(web_server_type)" type -t "is_$(web_server_type)_running" >/dev/null; then
+        print_validation_error "Could not load the $(web_server_type) web server library from /opt/bitnami/scripts. Check that it exists and is readable."
+    fi
+    return "$error_code"
+}
+########################
+# Check whether the web server is running
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   true if the web server is running, false otherwise
+#########################
+is_web_server_running() {
+    "is_$(web_server_type)_running"
+}
+########################
+# Start web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_start() {
+    info "Starting $(web_server_type) in background"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/start.sh"
+}
+########################
+# Stop web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_stop() {
+    info "Stopping $(web_server_type)"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/stop.sh"
+}
+########################
+# Restart web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_restart() {
+    info "Restarting $(web_server_type)"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/restart.sh"
+}
+########################
+# Reload web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_reload() {
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/reload.sh"
+}
+########################
+# Ensure a web server application configuration exists (i.e. Apache virtual host format or NGINX server block)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --hosts - Hosts to enable
+#   --type - Application type, which has an effect on which configuration template to use
+#   --allow-remote-connections - Whether to allow remote connections or to require local connections
+#   --disabled - Whether to render the file with a .disabled prefix
+#   --enable-https - Enable app configuration on HTTPS port
+#   --http-port - HTTP port number
+#   --https-port - HTTPS port number
+#   --document-root - Path to document root directory
+# Apache-specific flags:
+#   --apache-additional-configuration - Additional vhost configuration (no default)
+#   --apache-before-vhost-configuration - Configuration to add before the <VirtualHost> directive (no default)
+#   --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no')
+#   --apache-extra-directory-configuration - Extra configuration for the document root directory
+#   --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup
+# NGINX-specific flags:
+#   --nginx-additional-configuration - Additional server block configuration (no default)
+# Returns:
+#   true if the configuration was enabled, false otherwise
+########################
+ensure_web_server_app_configuration_exists() {
+    local app="${1:?missing app}"
+    shift
+    local -a apache_args nginx_args web_servers args_var
+    apache_args=("$app")
+    nginx_args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --hosts \
+            | --type \
+            | --allow-remote-connections \
+            | --disabled \
+            | --enable-https \
+            | --http-port \
+            | --https-port \
+            | --document-root \
+            )
+                apache_args+=("$1" "${2:?missing value}")
+                nginx_args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+            # Specific Apache flags
+            --apache-additional-configuration \
+            | --apache-before-vhost-configuration \
+            | --apache-allow-override \
+            | --apache-extra-directory-configuration \
+            | --apache-move-htaccess \
+            )
+                apache_args+=("${1//apache-/}" "${2:?missing value}")
+                shift
+                ;;
+            # Specific NGINX flags
+            --nginx-additional-configuration)
+                nginx_args+=("${1//nginx-/}" "${2:?missing value}")
+                shift
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        args_var="${web_server}_args[@]"
+        web_server_execute "$web_server" "ensure_${web_server}_app_configuration_exists" "${!args_var}"
+    done
+}
+########################
+# Ensure a web server application configuration does not exist anymore (i.e. Apache virtual host format or NGINX server block)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Returns:
+#   true if the configuration was disabled, false otherwise
+########################
+ensure_web_server_app_configuration_not_exists() {
+    local app="${1:?missing app}"
+    local -a web_servers
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        web_server_execute "$web_server" "ensure_${web_server}_app_configuration_not_exists" "$app"
+    done
+}
+########################
+# Ensure the web server loads the configuration for an application in a URL prefix
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --allow-remote-connections - Whether to allow remote connections or to require local connections
+#   --document-root - Path to document root directory
+#   --prefix - URL prefix from where it will be accessible (i.e. /myapp)
+#   --type - Application type, which has an effect on what configuration template will be used
+# Apache-specific flags:
+#   --apache-additional-configuration - Additional vhost configuration (no default)
+#   --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no')
+#   --apache-extra-directory-configuration - Extra configuration for the document root directory
+#   --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup
+# NGINX-specific flags:
+#   --nginx-additional-configuration - Additional server block configuration (no default)
+# Returns:
+#   true if the configuration was enabled, false otherwise
+########################
+ensure_web_server_prefix_configuration_exists() {
+    local app="${1:?missing app}"
+    shift
+    local -a apache_args nginx_args web_servers args_var
+    apache_args=("$app")
+    nginx_args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --allow-remote-connections \
+            | --document-root \
+            | --prefix \
+            | --type \
+            )
+                apache_args+=("$1" "${2:?missing value}")
+                nginx_args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+            # Specific Apache flags
+            --apache-additional-configuration \
+            | --apache-allow-override \
+            | --apache-extra-directory-configuration \
+            | --apache-move-htaccess \
+            )
+                apache_args+=("${1//apache-/}" "$2")
+                shift
+                ;;
+            # Specific NGINX flags
+            --nginx-additional-configuration)
+                nginx_args+=("${1//nginx-/}" "$2")
+                shift
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        args_var="${web_server}_args[@]"
+        web_server_execute "$web_server" "ensure_${web_server}_prefix_configuration_exists" "${!args_var}"
+    done
+}
+########################
+# Ensure a web server application configuration is updated with the runtime configuration (i.e. ports)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --hosts - Hosts to enable
+#   --enable-https - Update HTTPS app configuration
+#   --http-port - HTTP port number
+#   --https-port - HTTPS port number
+# Returns:
+#   true if the configuration was updated, false otherwise
+########################
+web_server_update_app_configuration() {
+    local app="${1:?missing app}"
+    shift
+    local -a args web_servers
+    args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --hosts \
+            | --enable-https \
+            | --http-port \
+            | --https-port \
+            )
+                args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        web_server_execute "$web_server" "${web_server}_update_app_configuration" "${args[@]}"
+    done
+}
+########################
+# Enable loading page, which shows users that the initialization process is not yet completed
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_enable_loading_page() {
+    ensure_web_server_app_configuration_exists "__loading" --hosts "_default_" \
+        --apache-additional-configuration "
+# Show a HTTP 503 Service Unavailable page by default
+RedirectMatch 503 ^/$
+# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
+ErrorDocument 404 /index.html
+ErrorDocument 503 /index.html" \
+        --nginx-additional-configuration "
+# Show a HTTP 503 Service Unavailable page by default
+location / {
+  return 503;
+}
+# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
+error_page 404 @installing;
+error_page 503 @installing;
+location @installing {
+  rewrite ^(.*)$ /index.html break;
+}"
+    web_server_reload
+}
+########################
+# Enable loading page, which shows users that the initialization process is not yet completed
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_disable_install_page() {
+    ensure_web_server_app_configuration_not_exists "__loading"
+    web_server_reload
+}
--- a/prebuildfs/usr/sbin/install_packages
+++ b/prebuildfs/usr/sbin/install_packages
+#!/bin/sh
+set -e
+set -u
+export DEBIAN_FRONTEND=noninteractive
+n=0
+max=2
+until [ $n -gt $max ]; do
+    set +e
+    (
+      apt-get update -qq &&
+      apt-get install -y --no-install-recommends "$@"
+    )
+    CODE=$?
+    set -e
+    if [ $CODE -eq 0 ]; then
+        break
+    fi
+    if [ $n -eq $max ]; then
+        exit $CODE
+    fi
+    echo "apt failed, retrying"
+    n=$(($n + 1))
+done
+rm -r /var/lib/apt/lists /var/cache/apt/archives