deploy.yml

# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-maven

name: Build and Deploy

on:
  push:
    branches:
      - main
#    tags:   [ "v*.*.*" ]

jobs:
  deploy:

    env:
      # https://github.com/actions/setup-java#cache-segment-restore-timeout
      SEGMENT_DOWNLOAD_TIMEOUT_MINS: '4'

    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write

    steps:
      - uses: actions/checkout@v4

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'
          cache: 'maven'

      - name: Authenticate Google Cloud
        uses: google-github-actions/auth@v2
        with:
          credentials_json: ${{ secrets.GCLOUD_SERVICE_KEY }}

      - name: Set up Gcloud CLI
        uses: google-github-actions/setup-gcloud@v2
        with:
          version: '>= 363.0.0'

      - name: Authenticate Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build with Maven
        run: mvn -B package -DskipTests

      - name: Configure Docker for Artifact Registry
        run: gcloud auth configure-docker ${{vars.DOCKER_CRED_HELPER}} -q

      - name: Update VM with new image
        run: |
          gcloud compute instances update-container ${{vars.VM_NAME}} --zone=${{vars.ZONE}} \
            --container-image=${{vars.DOCKER_CRED_HELPER}}/${{vars.IMAGE_PATH}}