pull_request.yaml

name: Pull Request

on:
  pull_request:
    branches:
      - 'master'

env:
  DOCKER_FILE_PATH: Dockerfile
  CONTAINER_REGISTRY_URL: ghcr.io/stakater
  CONTAINER_REGISTRY_USERNAME: stakater-user
  CONTAINER_REGISTRY_PASSWORD: ${{ secrets.STAKATER_GITHUB_TOKEN }}

jobs:
  build:
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip-ci]')"

    steps:

      - name: Check out code
        uses: actions/checkout@v4
        with:
          persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
          fetch-depth: 0 # otherwise, you will fail to push refs to dest repo
          ref: ${{github.event.pull_request.head.sha}}
          
      - name: Generate Tag
        id: generate_tag
        run: |
          sha=${{ github.event.pull_request.head.sha }}
          tag="SNAPSHOT-PR-${{ github.event.pull_request.number }}-${sha:0:8}"
          echo "##[set-output name=GIT_TAG;]$(echo ${tag})"

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        
      - name: Login to Registry
        uses: docker/login-action@v2
        with:
          registry: ${{ env.CONTAINER_REGISTRY_URL }}
          username: ${{ env.CONTAINER_REGISTRY_USERNAME }}
          password: ${{ env.CONTAINER_REGISTRY_PASSWORD }}

      - name: Generate image repository path
        id: image_repository_op
        run: |
          echo IMAGE_REPOSITORY=$(echo ${{ env.CONTAINER_REGISTRY_URL }}/${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
   
      - name: Build and push
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ${{ env.DOCKER_FILE_PATH }}
          pull: true
          push: true
          build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
          cache-to: type=inline
          tags: |
            ${{ env.IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
          labels: |
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}

      - name: Comment on PR
        uses: mshick/add-pr-comment@v2
        env:
          GITHUB_TOKEN: ${{ env.CONTAINER_REGISTRY_PASSWORD }}
        with:
          message: '@${{ github.actor }} Image is available for testing. `docker pull ${{ env.CONTAINER_REGISTRY_URL }}/${{ github.repository }}:${{ steps.generate_tag.outputs.GIT_TAG }}`'
          allow-repeats: false

      - name: Notify Failure
        if: failure()
        uses: mshick/add-pr-comment@v2
        env:
          GITHUB_TOKEN: ${{ env.CONTAINER_REGISTRY_PASSWORD }}
        with:
          message: '@${{ github.actor }} Yikes! You better fix it before anyone else finds out! [Build](https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha }}/checks) has Failed!'
          allow-repeats: false

      - name: Notify Slack
        uses: 8398a7/action-slack@v3
        if: always() # Pick up events even if the job fails or is canceled.
        with:
          status: ${{ job.status }}
          fields: repo,author,action,eventName,ref,workflow
        env:
          GITHUB_TOKEN: ${{ env.CONTAINER_REGISTRY_PASSWORD }}
          SLACK_WEBHOOK_URL: ${{ secrets.STAKATER_DELIVERY_SLACK_WEBHOOK }}