build_and_publish-docker.yml

name: Upload Docker Image

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:

env:
  DOCKERHUB_REPO: tillsteinbach/carconnectivity-mqtt
  GHCR_REPO: ghcr.io/tillsteinbach/carconnectivity-mqtt

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
          - linux/arm/v7
    environment: 
      name: dockerhub
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Prepare Variables
        id: prepare
        run: |
          platform=${{ matrix.platform }}
          echo "platform_pair=${platform//\//-}" >> $GITHUB_OUTPUT
          echo "scope=${{ github.ref_name }}-${platform}" >> $GITHUB_OUTPUT
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.DOCKERHUB_REPO }}
            ${{ env.GHCR_REPO }}
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Log in to Docker Hub
        uses: docker/login-action@v3.3.0
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Log in to the Container registry
        uses: docker/login-action@v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3.2.0
        with:
          platforms: ${{ matrix.platform }}
          image: ${{ matrix.platform == 'linux/arm/v7' && 'tonistiigi/binfmt:qemu-v8.1.5' || 'tonistiigi/binfmt:latest' }}
      - name: Setup Docker Buildx
        uses: docker/setup-buildx-action@v3.8.0
      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          file: docker/Dockerfile-edge
          build-args: VERSION=${{ steps.meta.outputs.version }}
          push: ${{ github.event_name != 'pull_request' }}
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,"name=${{ env.DOCKERHUB_REPO }},${{ env.GHCR_REPO }}",push-by-digest=true,name-canonical=true,push=true
          cache-from: type=gha,scope=${{ steps.prepare.outputs.scope }}
          cache-to: type=gha,scope=${{ steps.prepare.outputs.scope }},mode=max
      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"          
      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ steps.prepare.outputs.platform_pair }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1
  merge-and-deploy:
    runs-on: ubuntu-latest
    needs:
      - build
    environment: 
      name: dockerhub
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.DOCKERHUB_REPO }}
            ${{ env.GHCR_REPO }}            
          tags: |
            type=raw,value=edge
            type=pep440,pattern={{version}}   
      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.DOCKERHUB_REPO }}@sha256:%s ' *)
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.GHCR_REPO }}@sha256:%s ' *)          
      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.DOCKERHUB_REPO }}:${{ steps.meta.outputs.version }}
          docker buildx imagetools inspect ${{ env.GHCR_REPO }}:${{ steps.meta.outputs.version }}