docker-multi-platform-probe/.github/workflows/docker-build.yml

# See https://docs.github.com/en/actions/publishing-packages/publishing-docker-images

name: Build and push # to docker registries

on:
  workflow_dispatch:
  release:
    types: [published]

env:
  IMAGE_NAME: dselen/multi-platform-probe

jobs:
  docker_build:
    name: Build and push
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
      attestations: write
      id-token: write
    strategy:
      fail-fast: false
      matrix:
        variant:
          - name: dockerhub
            registry: "docker.io"
          - name: ghcr
            registry: "ghcr.io"
    steps:
      - name: Set image for Docker
        id: set-image
        run: |
          if [ "${{ matrix.variant.name }}" = "ghcr" ]; then
            echo "IMAGE_TO_USE=${GITHUB_REPOSITORY}" >> $GITHUB_ENV
          elif [ "${{ matrix.variant.name }}" == "dockerhub" ]; then
            echo "IMAGE_TO_USE=${IMAGE_NAME}" >> $GITHUB_ENV
          else
            echo "Failing to resolve."
            exit 1
          fi

      - name: Check out the repository
        uses: actions/checkout@v5

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: |
            - linux/amd64
            - linux/arm64
            - linux/arm/v7

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Hub
        if: matrix.variant.name == 'dockerhub'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PUSH_TOKEN }}
          registry: ${{ matrix.variant.registry }}

      - name: Log in to Github Container Registry
        if: matrix.variant.name == 'ghcr'
        uses: docker/login-action@v3
        with:
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
          registry: ${{ matrix.variant.registry }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ matrix.variant.registry }}/${{ env.IMAGE_TO_USE }}
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=sha,format=short,prefix=

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64,linux/arm/v7

      - name: Generate artifact attestation
        if: matrix.variant.name == 'dockerhub'
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ matrix.variant.registry }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

      - name: Generate artifact attestation
        if: matrix.variant.name == 'ghcr'
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ matrix.variant.registry }}/${{ github.repository }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true