build-actions-runner.yaml

name: Build and Push actions-runner Image

on:
  workflow_dispatch:
  push:
    branches: [main]
    paths: ["containers/actions-runner/**"]
  pull_request:
    branches: [main]
    paths: ["containers/actions-runner/**"]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  packages: write

jobs:
  build_and_push:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3.1.0
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate docker image tags
        id: metadata
        uses: docker/metadata-action@v5
        with:
          flavor: |
            # Disable latest tag
            latest=false
          images: |
            name=ghcr.io/${{ github.repository_owner }}/actions-runner
          tags: |
            type=sha

      - name: Build and push image
        uses: docker/build-push-action@v5.3.0
        with:
          context: ./containers/actions-runner
          platforms: linux/amd64
          push: ${{ !github.event.pull_request.head.repo.fork && steps.metadata.outputs.tags != '' }}
          tags: ${{ steps.metadata.outputs.tags }}
          labels: ${{ steps.metadata.outputs.labels }}