docker-publish.yml

# .github/workflows/docker-publish.yml

name: Docker Publish on Release

on:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

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

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

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

      - name: Extract metadata for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: mrantonsg/nova-dso-tracker
          tags: |
            # Create semver tags like v1.2.3, v1.2, and v1 when a release is published
            type=semver,pattern={{version}}
            
            # This rule creates the 'latest' tag ONLY when the workflow runs on
            # your main or master branch (either from a release or a manual run).
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # --- Documentation Automation Starts Here ---
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.x'

      - name: Generate Docker Readme
        run: python utils/prepare_docker_readme.py

      - name: Update Docker Hub Description
        uses: peter-evans/dockerhub-description@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: mrantonsg/nova-dso-tracker
          readme-filepath: ./README_DOCKER.md