neiam /mutant-operator

name: Build and Push Docker Image

on:
  push:
    branches:
      - master

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: neiam/mutant-operator

# A newer push supersedes this run: on a branch or PR the run in
# progress is cancelled; on master it finishes, and only a run still
# waiting is replaced.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

jobs:
  # ghcr.io from GitHub only. The forge reads .github/workflows too, and
  # there the ghcr.io login 403s; .forgejo/workflows/image.yml publishes
  # to the forge's own registry instead.
  build-and-push:
    if: github.server_url == 'https://github.com'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v2
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Build and push Docker image
      uses: docker/build-push-action@v4
      with:
        context: .
        push: true
        tags: |
          ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
          ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest