docker-ci.yml

name: Create and publish a Docker image

on:
  release:
    types: [ published ]
  workflow_dispatch:

concurrency:
  group: ${{github.workflow}} - ${{github.ref}}
  cancel-in-progress: true

env:
  GHCR_REGISTRY: ghcr.io
  DOCKER_HUB_REGISTRY: docker.io
  IMAGE_NAME: ${{ github.repository }}

# https://docs.github.com/en/actions/use-cases-and-examples/publishing-packages/publishing-docker-images
# https://docs.docker.com/build/ci/github-actions/multi-platform/
# https://github.com/docker/build-push-action

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      attestations: write
      id-token: write

    steps:
      - name: Checkout repo
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

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

      - name: Log in to the Github Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.GHCR_REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}
            ${{ env.DOCKER_HUB_REGISTRY }}/${{ env.IMAGE_NAME }}

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

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