build-examples.yml

name: Build Examples

# Controls when the workflow will run
on:
  push:
    paths:
      - 'examples/**'

  pull_request:
    paths:
      - 'examples/**'

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:
    inputs:
      deploy-example:
        type: choice
        description: Example to Deploy
        options: 
        - None
        - WordCount

jobs:
  build-examples:
    runs-on: ubuntu-latest

    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v3

      # Runs a set of commands using the runners shell
      - name: Maven Package
        run: |
          cd examples/user_0@gmail.com/word-count
          mvn clean package

          version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
          timestamp=$(date +"%Y%m%d%H%M%S")
          version_with_timestamp="${version}-${timestamp}"
          echo "Version with timestamp: $version_with_timestamp"

          echo "VERSION=$version" >> $GITHUB_ENV
          echo "VERSION_WITH_TIMESTAMP=$version_with_timestamp" >> $GITHUB_ENV

      - name: Log in to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Docker Build & Push
        run: |
          cd examples/user_0@gmail.com/word-count
          docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/word-count:$VERSION_WITH_TIMESTAMP --build-arg VERSION=$VERSION .
          docker push ${{ secrets.DOCKERHUB_USERNAME }}/word-count:$VERSION_WITH_TIMESTAMP