iventoy/.github/workflows/build-image.yml

name: Image Build
on:
  # Manueel starte
  workflow_dispatch:
    inputs:
      force_build:
        description: Force new build?
        required: false
        default: "false"
        type: string
  schedule: # run daily
    - cron: '0 0 * * *'

jobs:
  init:
    runs-on: ubuntu-latest
     # Map a step output to a job output
    outputs:
      iventoy: ${{ steps.iventoy.outputs.version }}
      buildOrNot: ${{ steps.buildOrNot.outputs.buildOrNot }}
    steps:
      - 
        name: get latest versions
        id: iventoy
        run: |
          version=$(curl -s https://api.github.com/repos/ventoy/PXE/releases/latest | grep "tag_name" | cut -d'"' -f4)
          echo "version=${version#'v'}" >> $GITHUB_OUTPUT          
      - # Check labels of the latest image on docker hub
        name: 
        id: buildOrNOt
        env: # if [ -z $FORCE_BUILD ]; then echo "false"; else echo $FORCE_BUILD; fi -> ternary -> ${FORCE_BUILD:-false}
          FORCE_BUILD: ${{ github.event.inputs.force_build }}
        run: |
          repo=${1:-${{ github.repository }}}
          tag=${2:-latest}
          token=$(curl -s "https://auth.docker.io/token?service=registry.docker.io&scope=repository:${repo}:pull" | jq -r '.token')
          digest=$(curl -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -H "Authorization: Bearer $token" -s "https://registry-1.docker.io/v2/${repo}/manifests/${tag}" | jq -r .config.digest)
          latest=$(curl -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -H "Authorization: Bearer $token" -s -L "https://registry-1.docker.io/v2/${repo}/blobs/${digest}" | jq . | grep -Ew "IVENTOY" | cut -d'"' -f4)
          echo "buildOrNot=$([ $latest != '${{ steps.iventoy.outputs.version }}' ] && echo "true" || echo "${FORCE_BUILD:-false}")" >> $GITHUB_OUTPUT          
      - 
        name: print
        run: | 
          echo ${{ steps.iventoy.outputs.version }}
          echo ${{ steps.buildOrNot.outputs.buildOrNot }}

  docker:
    name: iventoy image
    runs-on: ubuntu-latest
    needs: 
      - init
    if: |
      needs.init.outputs.buildOrNot == 'true'      
    steps:
      -
        name: init vars
        run: |
          echo "iventoy: ${{ needs.init.outputs.iventoy }}"          
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      -
        name: Build and push
        uses: docker/build-push-action@v4
        with:
          provenance: false # Breaking change introduced with 3.3.0 https://github.com/docker/build-push-action/releases/tag/v3.3.0, when an image is pushed since that version I can't retrieve the blob with labels anymore based on the digest via registry api, night have to look into an alternative way to do this 
          context: .
          file: ./Dockerfile
          labels: |
            IVENTOY=${{ needs.init.outputs.iventoy }}            
          build-args: |
            IVENTOY=${{ needs.init.outputs.iventoy }}            
          push: true
          tags: |
            ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:${{ needs.init.outputs.iventoy }}
            ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:latest            
      - 
        name: tweet new release
        uses: dart-actions/tweet@v1.0.0
        with:
          text: |
            A new iventoy docker image has been released!
            docker pull ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:${{ needs.init.outputs.iventoy }}            
          consumer-key: ${{ secrets.X_API_KEY }}
          consumer-secret: ${{ secrets.X_API_KEY_SECRET }}
          access-token: ${{ secrets.X_ACCESS_TOKEN }}
          access-token-secret: ${{ secrets.X_ACCESS_TOKEN_SECRET }}