docker.yml

name: Docker

on:
  push:
    branches:
      - main
  pull_request:
  release:
    types: [published]
  workflow_dispatch:

concurrency:
  group: "${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}"
  cancel-in-progress: true

jobs:
  docker:
    permissions:
      packages: write
      contents: read
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      ## Login to Docker Hub and/or GitHub container registry
      - name: Login to GitHub container registry
        if: ${{ github.event_name == 'release' }}
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Login to Docker Hub
        env:
          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
        if: ${{ github.event_name == 'release' && env.DOCKERHUB_USERNAME != '' && env.DOCKERHUB_PASSWORD != '' }}
        id: login-dockerhub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      ## Extract metadata (tags, labels) from Git reference and GitHub events for the Docker image
      - name: Extract metadata
        id: metadata
        uses: docker/metadata-action@v5
        with:
          images: |
            name=ghcr.io/${{ github.repository }},enable=true
            name=${{ github.repository }},enable=${{ steps.login-dockerhub.outcome == 'success' }}

      ## Build and push if the workflow was triggered by a release
      - name: Build (and push on release)
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name == 'release' }}
          tags: ${{ steps.metadata.outputs.tags }}
          labels: ${{ steps.metadata.outputs.labels }}