optimize docker build

.dockerignore

 # More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
 # Ignore all files which are not go type
-!**/*.go
-!**/*.mod
-!**/*.sum
+# !**/*.go
+# !**/*.mod
+# !**/*.sum
+
+testbin
\ No newline at end of file

.gitignore

@@ -26,4 +26,5 @@ coverage.html
 *.swo
 *~
 
-.vscode
\ No newline at end of file
+.vscode
+.gomodcache

Dockerfile

@@ -3,25 +3,21 @@
 FROM registry.il2.dso.mil/platform-one/devops/pipeline-templates/valkyrie/golang-builder-1.6:1.0 as builder
 
 WORKDIR /workspace
+# set go module cache
+ENV GOMODCACHE=/workspace/.gomodcache
 # Copy the Go Modules manifests
-COPY go.mod go.mod
-COPY go.sum go.sum
+COPY . .
 USER root
 RUN chmod 755 go.sum
-# cache deps before building and copying source so that we don't need to re-download as much
-# and so that source changes don't invalidate our downloaded layer
+# download with json logging
+# RUN go mod download -json
 RUN go mod download
 
-# Copy the go source
-COPY main.go main.go
-COPY driver.go driver.go
-COPY apis/ apis/
-COPY config/ config/
-COPY controllers/ controllers/
-COPY clients/ clients/
+# RUN ls -al 
 
 # Build
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go driver.go
+
 # make hadolint happy. set user to non root user
 USER golanguser
 

Dockerfile.local

+# NOTE: USING THIS IMAGE UNTIL registry1 credentials are added to IL2 runners
+# Build the manager binary
+FROM registry.il2.dso.mil/platform-one/devops/pipeline-templates/valkyrie/golang-builder-1.6:1.0 as builder
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+USER root
+RUN chmod 755 go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY driver.go driver.go
+COPY apis/ apis/
+COPY config/ config/
+COPY controllers/ controllers/
+COPY clients/ clients/
+
+# Build
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go driver.go
+# make hadolint happy. set user to non root user
+USER golanguser
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM registry.il2.dso.mil/platform-one/devops/pipeline-templates/base-image/harden-ubi8-8.4:1.0
+WORKDIR /app
+COPY --from=builder /workspace/manager .
+USER appuser
+
+ENTRYPOINT ["/app/manager"]

README.md

 ## <img src="valkyrie.png"  width="60"> Valkyrie Automated CICD Provisioning Tool 
 
-## Bump
+## Env Variables
+- for local building and to closer simulate the pipeline set
+  - from root folder of project
+  - export GOMODCACHE=$(pwd)/.gomodcache
+
 ### Golang Frameworks
 - kubebuilder
   - https://book.kubebuilder.io/introduction.html