Draft: Resolve "Create Pipeline for building Atlantis image"

General MR

Summary

Adds the build and promotion of Docker images in the pipeline.

Stages:

• build (only on change to files)
  • Triggers:
    • change to dockerfiles/bb-ci
    • change to dockerfiles/cypress
  • Pushes to bigbang-staging with IMAGE_NAME:IMAGE_VERSION-beta
• promote
  • Triggers:
    • if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
  • Pushes to bigbang-ci with IMAGE_NAME:IMAGE_VERSION

Uses kaniko and crane to build and promote.

Request adding to Dockerfile the label version so we can use it for image tag.

LABEL version="2.11.0"

Relevant logs/screenshots

https://repo1.dso.mil/big-bang/pipeline-templates/package-validation/-/pipelines/2412345

TODOs

• error handling around missing LABEL version
• existing image/tags.

Closes #156