push-dockerimage-action.yml

name: push-dockerimage
on:
  push:
    # Sequence of patterns matched against refs/heads
    branches:    
      # Push events on main branch
      - main
env:
  #REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      # https://github.com/docker/setup-qemu-action#usage
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      
      - name: Retrieve author data
        run: |
          echo AUTHOR=$(curl -sSL ${{ github.event.repository.owner.url }} | jq -r '.name') >> $GITHUB_ENV
      #https://github.com/docker/metadata-action
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v3
        with:
          # list of Docker images to use as base name for tags
          images: ${{ env.IMAGE_NAME }}
          labels: |
            org.opencontainers.image.authors=${{ env.AUTHOR }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=ref,event=branch
            type=sha
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
      
      # https://github.com/marketplace/actions/docker-setup-buildx
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      # https://github.com/docker/login-action#docker-hub
      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      
      # https://github.com/docker/build-push-action#multi-platform-image
      - name: Build Images
        uses: docker/build-push-action@v2
        with:
          context: .
          file: Dockerfile
          platforms: linux/amd64,linux/arm64,linux/armhf
          push: false
          target: test_image
      
      # https://github.com/docker/build-push-action#multi-platform-image
      - name: Build and push to Docker Hub
        uses: docker/build-push-action@v2
        with:
          context: .
          file: Dockerfile
          platforms: linux/amd64,linux/arm64,linux/armhf
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          target: final_image