action.yml

# composite action https://docs.github.com/en/free-pro-team@latest/actions/creating-actions/creating-a-composite-run-steps-action
name: 'Build Docker Image'
description: 'Builds and Pushes Docker Images with some Keptn Internals'
inputs:
  IMAGE_NAME:
    description: Image Name, e.g., keptn/some-service or keptn-contrib/some-service
    required: true
  DOCKER_FOLDER:
    description: In case you are trying to build from a subfolder, set this to the subfolder (must end in a trailing slash)
    default: './'
  VERSION:
    description: Semantic version used as the tag of the docker image
    required: true
  DATETIME:
    description: Optional datetime for the tag of the docker image (will be set automatically if left empty)
    default: unset
  FILE:
    description: Optional name of the Dockerfile
    default: 'Dockerfile'
runs:
  using: composite
  steps: 
    - shell: bash
      id: check_datetime
      env:
        DATETIME: ${{ inputs.DATETIME }}
      run: |
        if [[ "$DATETIME" == "unset" ]] || [[ "$DATETIME" == "" ]]; then
          # generate datetime
          echo Generating datetime using date command
          echo "::set-output name=DATETIME::$(date +'%Y%m%d')$(date +'%H%M')"
        else
          # use provided datetime
          echo Using provided datetime $DATETIME
          echo "::set-output name=DATETIME::${DATETIME}"
        fi

    - shell: bash
      id: check_docker_folder
      env:
        DOCKER_FOLDER: ${{ inputs.DOCKER_FOLDER }}      
      run: |
        # ensure trailing slash in folder
        if [[ "${DOCKER_FOLDER}" != */ ]]; then
          echo "::error Please ensure that FOLDER has a trailing slash, e.g., ./ or api/"
          exit 1
        fi

    - shell: bash
      id: prepare_manifest
      name: Prepare Build Manifest
      env:
        DOCKER_FOLDER: ${{ inputs.DOCKER_FOLDER }}
        DATETIME: ${{ steps.check_datetime.outputs.DATETIME }}
      run: |
        ${{ github.action_path }}/docker/writeManifest.sh ${{ github.action_path }}/docker/MANIFEST
        cat ${{ github.action_path }}/docker/MANIFEST

        # copy manifest
        cp ${{ github.action_path }}/docker/MANIFEST ./${DOCKER_FOLDER}MANIFEST

        if [[ $? -ne 0 ]]; then
          echo "::error Could not find MANIFEST"
          exit 1
        fi

        # copy entrypoint script
        cp ${{ github.action_path }}/docker/entrypoint.sh ./${DOCKER_FOLDER}entrypoint.sh

    - shell: bash
      id: composite-action-build-docker-image
      env:
        IMAGE_NAME: ${{ inputs.IMAGE_NAME }}
        DOCKER_FOLDER: ${{ inputs.DOCKER_FOLDER }}
        VERSION: ${{ inputs.VERSION }}
        DATETIME: ${{ steps.check_datetime.outputs.DATETIME }}
        FILE: ${{ inputs.FILE }}
      run: ${{ github.action_path }}/build_docker_image.sh "${IMAGE_NAME}" "${DOCKER_FOLDER}" "${VERSION}" "${DATETIME}" "${FILE}"