publish-images.yaml

# https://docs.github.com/en/actions/use-cases-and-examples/publishing-packages/publishing-docker-images
name: Publish Docker image

on:
  release:
    types: [published]

env:
  GITHUB_REGISTRY: ghcr.io
  DOCKERHUB_REGISTRY: index.docker.io
  GITHUB_IMAGE_NAME: ${{ github.repository }}
  DOCKERHUB_IMAGE_NAME: ruigomes99/${{ github.event.repository.name }}

jobs:
  push_to_registries:
    name: Push Docker image to multiple registries
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
      attestations: write
      id-token: write
    steps:
      - name: Checkout code
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7

      - name: Log in to Docker Hub
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 #v3.3.0
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Log in to GitHub Container registry
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 #v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 #v5.5.1
        with:
          images: |
            ${{ env.DOCKERHUB_IMAGE_NAME}}
            ${{ env.GITHUB_REGISTRY }}/${{ env.GITHUB_IMAGE_NAME }}

      - name: Build and push Docker images
        id: push
        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 #v6.7.0
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Generate artifact attestation to GitHub Container registry
        uses: actions/attest-build-provenance@6149ea5740be74af77f260b9db67e633f6b0a9a1 #v1.4.1
        with:
          subject-name: ${{ env.GITHUB_REGISTRY }}/${{ env.GITHUB_IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

      - name: Generate artifact attestation to Docker Hub
        uses: actions/attest-build-provenance@6149ea5740be74af77f260b9db67e633f6b0a9a1 #v1.4.1
        with:
          subject-name: ${{ env.DOCKERHUB_REGISTRY }}/${{ env.DOCKERHUB_IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true