push-to-registry/.github/workflows/verify-push.yaml

# 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: Build and Push
on:
  push:
  workflow_dispatch:
  schedule:
    - cron: '0 0 * * *'  # every day at midnight

env:
  PROJECT_DIR: spring-petclinic
  IMAGE_NAME: spring-petclinic
  IMAGE_REGISTRY: quay.io
  IMAGE_TAGS: v1 ${{ github.sha }}
  MVN_REPO_DIR: ~/.m2/repository

jobs:
  build-and-push:
    name: Build and push image to Quay.io
    runs-on: ubuntu-20.04
    steps:

      # Checkout push-to-registry action github repository
      - name: Checkout Push to Registry action
        uses: actions/checkout@v2
        with:
          path: "push-to-registry"

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

      # If none of these files has changed, we assume that the contents of
      # .m2/repository can be fetched from the cache.
      - name: Hash Maven files
        working-directory: ${{ env.PROJECT_DIR }}
        run: |
          echo "MVN_HASH=${{ hashFiles('**/pom.xml', '.mvn/**/*', 'mvnw*') }}" >> $GITHUB_ENV

      # Download the m2 repository from the cache to speed up the build.
      - name: Check for Maven cache
        id: check-mvn-cache
        uses: actions/cache@v2
        with:
          path: ${{ env.MVN_REPO_DIR }}
          key: ${{ env.MVN_HASH }}

      # 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.PROJECT_DIR }}
        run: |
          mvn package -ntp -B

       # If there was no cache hit above, store the output into the cache now.
      - name: Save Maven repo into cache
        if: ${{ steps.check-mvn-cache.outputs.cache-hit }} != 'true'
        uses: actions/cache@v2
        with:
          path: ${{ env.MVN_REPO_DIR }}
          key: ${{ env.MVN_HASH }}

      # Build image using Buildah action
      - name: Build Image
        id: build_image
        uses: redhat-actions/buildah-build@v2
        with:
          image: ${{ env.IMAGE_NAME }}
          tags: ${{ env.IMAGE_TAGS }}
          base-image: 'registry.access.redhat.com/openjdk/openjdk-11-rhel7'
          # To avoid hardcoding a particular version of the binary.
          content: |
            ./spring-petclinic/target/spring-petclinic-*.jar
          entrypoint: |
            java
            -jar
            spring-petclinic-*.jar
          port: 8080
          oci: 'true'

      # Push the image to Quay.io (Image Registry)
      - name: Push To Quay
        uses: ./push-to-registry/
        id: push
        with:
          image: ${{ steps.build_image.outputs.image }}
          tags: ${{ steps.build_image.outputs.tags }}
          registry: ${{ env.IMAGE_REGISTRY }}/${{ secrets.REGISTRY_USER }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_PASSWORD }}
          extra-args: |
            --disable-content-trust

      - name: Echo outputs
        run: |
          echo "${{ toJSON(steps.push.outputs) }}"