workflows.yml

name: Java CI with Gradle

# 동작 조건 설정 : main 브랜치에 push가 발생할 경우 동작한다.
on:
  push:
    branches: [ "main" ]
    
permissions:
  contents: read

jobs:
  # Spring Boot 애플리케이션을 빌드하여 도커허브에 푸시하는 과정
  build-docker-image:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    # 1. Java 17 세팅
    - name: Set up JDK 17
      uses: actions/setup-java@v3
      with:
        java-version: '17'
        distribution: 'temurin'

    # yml 추가
    - name: Set YML
      run: |
        echo "${{ secrets.APPLICATION_DEV_YML }}" | base64 --decode > src/main/resources/application-dev.yml
        find src

    - name: Run chmod to make gradlew executable
      run: chmod +x ./gradlew

    # 2. Spring Boot 애플리케이션 빌드
    - name: Build with Gradle
      uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
      with:
        arguments: clean bootJar

    # 3. Docker 이미지 빌드
    - name: docker image build
      run: docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/mymoo .

    # 4. DockerHub 로그인
    - name: docker login
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_PASSWORD }}

    # 5. Docker Hub 이미지 푸시
    - name: docker Hub push
      run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/mymoo

  # 위 과정에서 푸시한 이미지를 ec2에서 풀받아서 실행시키는 과정 
  run-docker-image-on-ec2:
    # build-docker-image (위)과정이 완료되어야 실행됩니다.
    needs: build-docker-image
    runs-on: self-hosted
    
    steps:
      # 0. 최신 이미지를 풀받습니다
      - name: docker pull
        run: sudo docker pull ${{ secrets.DOCKERHUB_USERNAME }}/mymoo

      # 1. docker-compose 종료
      - name: docker-compose down
        run: sudo docker-compose down

      # 2. docker-compose 실행
      - name: docker-compose up
        run: sudo docker-compose up -d 

      # 3. 안쓰는 이미지 제거
      - name: Remove unused Docker images
        run: sudo docker image prune -f