publish.yaml

name: Create and publish a Docker image

on:
  push:
    branches:
      - main

env:
  REGISTRY: ghcr.io

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - path: ./backend
            image: ghcr.io/${{ github.repository }}/backend
          - path: ./frontend
            image: ghcr.io/${{ github.repository }}/frontend
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ matrix.image }}
      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: ${{ matrix.path }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ env.REGISTRY }}/${{ matrix.image }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true