name: Test Dockerfile

on:
  pull_request:

jobs:
  detect-changes:
    # Run on `grafana/grafana` main branch, or on pull requests to prevent double-running on mirrors
    name: Detect whether code changed
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      changed: ${{ steps.detect-changes.outputs.backend || steps.detect-changes.outputs.frontend || steps.detect-changes.outputs.dockerfile }}
    steps:
      - uses: actions/checkout@v5
        with:
          persist-credentials: true # required to get more history in the changed-files action
          fetch-depth: 2
      - name: Detect changes
        id: detect-changes
        uses: ./.github/actions/change-detection
        with:
          self: .github/workflows/pr-test-integration.yml

  build-dockerfile:
    needs: detect-changes
    if: needs.detect-changes.outputs.changed == 'true'
    runs-on: ubuntu-x64-large-io
    permissions:
      contents: read
    steps:
      - name: Checkout code
        uses: actions/checkout@v5
        with:
          persist-credentials: false
      - uses: docker/setup-docker-action@b60f85385d03ac8acfca6d9996982511d8620a19 # v4
      - name: Build Dockerfile
        run: make build-docker-full