name: Publish image to Dockerhub

on:
  release:
    types: [released]

jobs:
  build:
    env:
      IMAGE_NAME: mikefarah/yq
    runs-on: ubuntu-latest
    steps:
      - name: Get latest release tag      
        uses: oprypin/find-latest-tag@v1
        with:
          repository: mikefarah/yq  # The repository to scan.
          releases-only: true  # We know that all relevant tags have a GitHub release for them.
        id: yq  
        
      - name: Clone source code
        uses: actions/checkout@v2
        with:
          ref: ${{ steps.yq.outputs.tag }}
      
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
        with:
          platforms: all
  
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: latest

      - name: Available platforms
        run: echo ${{ steps.buildx.outputs.platforms }} && docker version
 
      - name: Build and push image
        run: |
          IMAGE_VERSION="$(git describe --tags --abbrev=0)"
          SHORT_SHA1=$(git rev-parse --short HEAD)
          PLATFORMS="linux/amd64,linux/ppc64le,linux/arm64"
          echo "Building and pushing version ${IMAGE_VERSION} of image ${IMAGE_NAME}"
          echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
          docker buildx build --platform "${PLATFORMS}" -t "${IMAGE_NAME}:${IMAGE_VERSION}"  -t "${IMAGE_NAME}:latest" \
            --push .