ci_pipeline.yml

name: Maven Build and Docker Image deploy
on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: repo checkout
        uses: actions/checkout@v4

      - name: update_version
        working-directory: ./myapp
        run: |
          version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
          newVersion=$(echo $version | awk -F'[.-]' '{print $1"."$2"."$3+1}') >> $GITHUB_ENV
          mvn versions:set -DnewVersion=$newVersion
          echo "newVersion=$newVersion" >> "$GITHUB_ENV"
          echo $newVersion >> version.txt

      - name: Compile Code and Package Artifact
        working-directory: ./myapp 
        run: |
          mvn clean package

      - name: Create Jar artifact
        uses: actions/upload-artifact@v3
        with:
          name: my-artifact
          path: ${{ github.workspace }}/myapp/target/*.jar

      - name: Create Version artifact
        uses: actions/upload-artifact@v2
        with:
          name: version
          path: myapp/version.txt

  publish:
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: Download JAR
        uses: actions/download-artifact@v3
        with:
          name: my-artifact
          path: ${{ github.workspace }}/myapp/target/
      
      - name: Download Version
        uses: actions/download-artifact@v3
        with:
          name: version
      
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_UNAME }}
          password: ${{ secrets.DOCKER_KEY }}
      
      - name: Set tag variable
        run : |
          echo "new_tag=$(cat version.txt)" >> "$GITHUB_ENV"
      
      - name: Build Docker image and push
        uses: docker/build-push-action@v4
        with:
            context: .
            file: Dockerfile
            push: true
            tags:  vladipiko/maven-hello-world:${{ env.new_tag }}

  deploy:
    runs-on: ubuntu-latest
    needs: publish
    steps:
      - name: Download Version
        uses: actions/download-artifact@v3
        with:
          name: version

      - name: Set tag variable
        run : |
          echo "new_tag=$(cat version.txt)" >> "$GITHUB_ENV"
          
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_UNAME }}
          password: ${{ secrets.DOCKER_KEY }}

      - name: Run the build process with Docker
        uses: addnab/docker-run-action@v3
        with:
            image: ${{ secrets.DOCKER_REPO }}/maven-hello-world:${{ env.new_tag }}
            run: |
              java -jar app.jar