action.yml

name: 'Handle Docker images'
description: 'Builds, tags and pushes a given Docker image when needed'
inputs:
  images:
    description: 'Image names (registry name + namespace + base name)'
    required: true
  registry:
    description: 'Docker registry'
    required: true
  dockerfiles_root_dir:
    description: 'Path to dockerfiles root dir relative to repository root'
    required: true
  push:
    description: 'Push built images to registry'
    required: false
    default: 'true'
  changed_components:
    description: 'Components changed by a pull request'
    required: true

outputs:
  images:
    description: "Images to use in workflow"
    value: ${{ steps.handle_images.outputs.images }}

runs:
  using: 'composite'
  steps:
    - name: Checkout head
      uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1

    - name: Checkout base
      uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
      with:
        ref: ${{ github.base_ref || github.event.merge_group.base_ref }}
        sparse-checkout: ${{ inputs.dockerfiles_root_dir }}/docker_tag
        path: base

    - name: Install Python dependencies
      uses: py-actions/py-dependency-install@30aa0023464ed4b5b116bd9fbdab87acf01a484e # v4.1.0
      with:
        path: "${{ github.action_path }}/requirements.txt"
        update-setuptools: "false"
        update-wheel: "false"

    - name: Set up Docker Buildx
      id: buildx
      uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1
      with:
        driver-opts: |
          image=${{ inputs.registry }}/dockerio/moby/buildkit:buildx-stable-1

    - name: Handle docker images
      id: handle_images
      shell: bash
      run: |
        images=$(echo "${{ inputs.images }}" | tr '\n' ',' | sed 's/,*$//')
        pr="${{ github.event.pull_request.number }}"

        python3 .github/actions/handle_docker/get_images_to_build.py \
        -d "${{ inputs.dockerfiles_root_dir }}" \
        -r "${{ inputs.registry }}" \
        --images "$images" \
        --head_tag_file "${{ inputs.dockerfiles_root_dir }}/docker_tag" \
        --base_tag_file "base/${{ inputs.dockerfiles_root_dir }}/docker_tag" \
        --docker_env_changed "${{ fromJSON(inputs.changed_components).docker_env }}" \
        --dockerfiles_changed "${{ fromJSON(inputs.changed_components).dockerfiles }}" \
        --docker_builder "${{ steps.buildx.outputs.name }}" \
        --repo "${{ github.repository }}" \
        --ref_name "${{ github.ref_name }}" \
        $([[ -n $pr ]] && echo "--pr $pr" || echo '-s ${{ github.sha }}') \
        $([[ -n "${{ inputs.push }}" ]] && echo "--push" || echo '')
      env:
        GITHUB_TOKEN: ${{ github.token }}