.github/workflows/publish_docker_image.yml

name: Create and publish a Docker image

on:
  release:
    types: [published]
  workflow_dispatch:

permissions:
  contents: read

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

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
        with:
          submodules: recursive

      - name: Log in to the Container registry
        uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker (slim variant)
        id: meta-slim
        uses: docker/metadata-action@818d4b7b91585d195f67373fd9cb0332e31a7175
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          flavor: |
            latest=auto
            prefix=slim-,onlatest=true
            suffix=
        
      - name: Build and push Docker image (slim)
        uses: docker/build-push-action@2eb1c1961a95fc15694676618e422e8ba1d63825
        with:
          context: .
          push: true
          tags: ${{ steps.meta-slim.outputs.tags }}
          labels: ${{ steps.meta-slim.outputs.labels }}
          build-args: |
            VARIANT=slim
      
      - name: Extract metadata (tags, labels) for Docker (full variant)
        id: meta-full
        uses: docker/metadata-action@818d4b7b91585d195f67373fd9cb0332e31a7175
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image (full)
        uses: docker/build-push-action@2eb1c1961a95fc15694676618e422e8ba1d63825
        with:
          context: .
          push: true
          tags: ${{ steps.meta-full.outputs.tags }}
          labels: ${{ steps.meta-full.outputs.labels }}
          build-args: |
            VARIANT=full