buildah-build/.github/workflows/verify-build.yml

# This workflow will perform a test whenever there
# is some change in code done to ensure that the changes
# are not buggy and we are getting the desired output.
name: Test Build
on: [push, pull_request, workflow_dispatch]
env:
  TEST_REPO: spring-petclinic
  IMAGE_NAME: spring-petclinic

jobs:
  build:
    name: Build image using Buildah
    runs-on: ubuntu-latest
    steps:

      # Fetch name of the Forked Repository with Branch
      # if workflow is triggered from pull request
      - name: Fetch PR head repo and branch name
        if: github.event_name == 'pull_request'
        run: |
          HEAD_REPO_NAME=$(jq -r '.pull_request.head.repo.full_name' "$GITHUB_EVENT_PATH")
          echo "PR head repo: $HEAD_REPO_NAME"
          echo "repo=$HEAD_REPO_NAME" >> $GITHUB_ENV
          echo "branch=$GITHUB_HEAD_REF" >> $GITHUB_ENV          

      # Extract repository name with branch
      - name: Fetch Repository name with branch
        if: github.event_name != 'pull_request'
        shell: bash
        run: |
          echo "repo=$GITHUB_REPOSITORY" >> $GITHUB_ENV
          echo "branch=${GITHUB_REF#refs/heads/}" >> $GITHUB_ENV          

      # Checkout buildah action github repository
      - name: Checkout Buildah action
        uses: actions/checkout@v2
        with:
          repository: ${{ env.repo }}
          ref: ${{ env.branch }}
          path: "buildah-build"

      # Checkout spring-petclinic github repository
      - name: Checkout spring-petclinic project
        uses: actions/checkout@v2
        with:
          repository: "spring-projects/spring-petclinic"
          path: ${{ env.TEST_REPO }}

      # Setup java.
      - name: Setup Java
        uses: actions/setup-java@v1
        with:
          java-version: 11

      # Run maven to build the project
      - name: Maven
        working-directory: ${{ env.TEST_REPO }}
        run: |
          mvn package -ntp -B           

      # Build image using Buildah action
      - name: Build Image
        uses: ./buildah-build/
        with:
          image: ${{ env.IMAGE_NAME }}
          content: |
            ./spring-petclinic/target/spring-petclinic-2.3.0.BUILD-SNAPSHOT.jar            
          entrypoint: |
            java
            -jar
            spring-petclinic-2.3.0.BUILD-SNAPSHOT.jar            
          port: 8080

      # Check if image is build
      - name: Check images created
        run: buildah images | grep '${{ env.IMAGE_NAME }}'