name: Publish Canary Image

on:
  push:
    branches:
      - master
    paths-ignore:
      - .github/workflows/runners.yml
      - .github/workflows/on-push-lint-charts.yml
      - .github/workflows/on-push-master-publish-chart.yml
      - .github/workflows/release.yml
      - .github/workflows/test-entrypoint.yml
      - "runner/**"
      - "**.md"
      - ".gitignore"

jobs:
  build:
    runs-on: ubuntu-latest
    name: Build and Publish Canary Image
    env:
      DOCKERHUB_USERNAME: ${{ secrets.DOCKER_USER }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: latest

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

      # Considered unstable builds
      # See Issue #285, PR #286, and PR #323 for more information
      - name: Build and Push
        uses: docker/build-push-action@v2
        with:
          file: Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: |
            ${{ env.DOCKERHUB_USERNAME }}/actions-runner-controller:canary