create_release.yml

name: create_release

on:
  release:
    types: [published]

    
env:
  SECRETS_ARE_AVAILABLE: ${{ secrets.DOCKERHUB_USERNAME }}
  BUILD_REPOSITORY: knicknic/webtoons-comments
  BUILD_PLATFORMS: linux/amd64,linux/arm64/v8,linux/ppc64le,linux/s390x,linux/arm/v7,linux/arm/v6 # all platforms from available platforms that are also available from debian:latest

jobs:
  build_all_arch:
    runs-on: ubuntu-latest
    steps:
    - 
      uses: actions/checkout@v2.3.4
    -
      name: Set up QEMU
      uses: docker/setup-qemu-action@v1.1.0
    -
      name: Set up Docker Buildx
      id: buildx
      uses: docker/setup-buildx-action@v1.3.0
      with:
        install: true
        # above aliases `docker buildx build` as `docker build`
    -
      name: Available platforms
      run: echo ${{ steps.buildx.outputs.platforms }}
    -
      name: Login to Docker Hub
      uses: docker/login-action@v1.9.0
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }} 
    -
      name: Get short tag name
      #converts v1.0.0 -> v1
      id: shortTagName
      shell: pwsh
      env: 
        SEMANTIC_VERSION: ${{ github.event.release.tag_name }}
      run: |
        $shortVersion = $env:SEMANTIC_VERSION.split(".")[0]
        echo "::set-output name=tag::$shortVersion"
    -
      name: Build & push image & push cache
      # all platforms from available platforms that are also available from debian:latest
      run: |
        docker build . -t ${{ env.BUILD_REPOSITORY }}:latest -t ${{ env.BUILD_REPOSITORY }}:${{ steps.shortTagName.outputs.tag }} -t ${{ env.BUILD_REPOSITORY }}:${{ github.event.release.tag_name }} --platform ${{ env.BUILD_PLATFORMS }}  --cache-from type=registry,ref=${{ env.BUILD_REPOSITORY }}:build --cache-to type=registry,ref=${{ env.BUILD_REPOSITORY }}:build,node=max,push=true --push