[infra] #13 Docker CI/CD

.github/workflows/deploy.yml

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+name: Docker CI/CD with Compose
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-22.04
+
+    steps:
+      # 1. 소스코드 체크아웃
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # 2. Docker Buildx 설정
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # 3. DockerHub 로그인
+      - name: DockerHub 로그인
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      # 4. Docker 이미지 빌드 및 푸시
+      - name: Docker 이미지 빌드 및 푸시
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: yeeun0702/spring-plus:latest
+
+      # 5. docker-compose.yml을 EC2에 복사
+      - name: EC2에 docker-compose.yml 업로드
+        uses: appleboy/scp-action@v0.1.4
+        with:
+          host: ${{ secrets.EC2_HOST }}
+          username: ${{ secrets.EC2_USER }}
+          key: ${{ secrets.EC2_KEY }}
+          source: docker-compose.yml
+          target: /home/${{ secrets.EC2_USER }}/app/
+
+      # 6. EC2에서 docker-compose 실행
+      - name: EC2에서 docker-compose로 배포
+        uses: appleboy/ssh-action@v1.0.0
+        with:
+          host: ${{ secrets.EC2_HOST }}
+          username: ${{ secrets.EC2_USER }}
+          key: ${{ secrets.EC2_KEY }}
+          script: |
+            cd /home/${{ secrets.EC2_USER }}/app
+
+            docker compose pull
+            docker compose down || true
+            docker compose up -d

Dockerfile

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+# Gradle로 빌드 (테스트 생략)
+FROM gradle:8.5-jdk17 AS builder
+WORKDIR /app
+COPY --chown=gradle:gradle . .
+RUN gradle build -x test
+
+# 실행 이미지 (경량화)
+FROM openjdk:17-jdk-slim
+WORKDIR /app
+COPY --from=builder /app/build/libs/*.jar app.jar
+ENTRYPOINT ["java", "-jar", "/app/app.jar"]

docker-compose.yml

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+version: '3.8'
+
+services:
+  app:
+    image: yeeun0702/spring-plus:latest
+    container_name: spring-plus
+    ports:
+      - "80:8080"
+    environment:
+      - SPRING_PROFILES_ACTIVE=prod
+    volumes:
+      - ./application-prod.yml:/app/application-prod.yml
+    command: ["java", "-jar", "/app/app.jar", "--spring.config.additional-location=file:/app/application-prod.yml"]
+    restart: always