regenerate-images.yml

name: Regenerate Images

on:
  workflow_dispatch: {}
  schedule:
    # Once per week on sunday
    - cron: '0 0 * * 0'

permissions:
  packages: write

jobs:
  preview-image:
    runs-on: ubuntu-latest
    env:
      START_VERSION: 11
      IMAGE_REPO: ghcr.io/${{ github.repository }}/showcase
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
        with:
          fetch-depth: 0
          fetch-tags: true
      - uses: ./.github/actions/setup-mint
      - name: Regenerate latest container images to keep them up to date
        run: |
          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
          majorVersion=$START_VERSION
          echo "Starting image regeneration with version $majorVersion"

          while : ; do
            version=$(git tag --sort=v:refname -l "$majorVersion.*.*" | tail -1)
            [[ "$version" != "" ]] || break
          
            image="$IMAGE_REPO:$version"
            echo ""
            echo "Regenerating $image"
            echo ""
          
            (( $majorVersion < 13 )) && target=initless || target=init  
            docker build \
              --tag tmp-fat \
              --build-arg BASE="$image" \
              --file .github/Dockerfile.regenerate \
              --target $target \
              .
            # Try/Catch
            {
              mint slim \
                --target tmp-fat \
                --tag tmp \
                --preserve-path /usr/share/nginx/html
            } || {
              docker tag tmp-fat tmp
            }            
            docker tag tmp "$image"
            docker push "$image"
          
            echo ""
            echo "Finished regenerating $image"
            echo ""
          
            majorVersion=$((majorVersion+1))
          done
        env:
          DOCKER_BUILDKIT: 1