ghcr-docker.yml

name: Publish on GitHub Container Registry
# Basics from https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions
on:
  workflow_dispatch:
  workflow_run:
    workflows: ['Tests']
    types: [completed]
    branches:
    - main

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'success' }}

    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write

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

    - 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:
        labels: |
          org.opencontainers.image.title=fhir-candle
          org.opencontainers.image.description=A small in-memory FHIR server that can be used for testing and development - NOT for production workloads.
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=raw,value=latest,enable={{is_default_branch}}

    - name: Build and push Docker image
      id: push
      uses: docker/build-push-action@v6
      with:
        context: .
        platforms: linux/amd64,linux/arm64
        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: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
        subject-digest: ${{ steps.push.outputs.digest }}
        push-to-registry: true