release-dockerhub-ghcr.yml

# https://gist.github.com/rexzhang/47a5b0e7baa8101bbfdef50c990e5337

name: Publish Docker Image to Docker Hub and GHCR

on:
  push:
    tags:
      - "v*"

jobs:
  docker:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

    steps:
      - name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=${{ vars.DOCKERHUB_REPOSITORY }}
          GHCR_IMAGE=ghcr.io/${{ github.repository }}
          VERSION=edge
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/v}
          fi
          if [ "${{ github.event_name }}" = "schedule" ]; then
            VERSION=nightly
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION},${GHCR_IMAGE}:${VERSION}"
          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(\.[0-9]{1,3})?$ ]]; then
            TAGS="$TAGS,${DOCKER_IMAGE}:latest,${GHCR_IMAGE}:latest"
          fi
          echo "tags=${TAGS}" >> $GITHUB_OUTPUT

      - name: Checkout repository
        # https://github.com/actions/checkout
        uses: actions/checkout@v5

      - name: Install Cosign
        # https://github.com/sigstore/cosign-installer
        uses: sigstore/cosign-installer@v4.0.0

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Set up QEMU
        # https://github.com/docker/setup-qemu-action
        uses: docker/setup-qemu-action@v3
        with:
          platforms: all

      - name: Set up Docker Buildx
        # https://github.com/docker/setup-buildx-action
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to DockerHub
        # https://github.com/docker/login-action
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Log in to GHCR
        # https://github.com/docker/login-action
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        # https://github.com/docker/build-push-action
        id: docker_build
        uses: docker/build-push-action@v6
        with:
          context: .
          builder: ${{ steps.buildx.outputs.name }}
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.prep.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}