Merge pull request #27 from codestates-seb/dev-server#08/devops

[Feat] 백엔드 서버 CI 구현

server/008main_project/.github/workflows/main.yml

@@ -0,0 +1,26 @@
+name: Java CI with Gradle
+
+on:
+  pull_request:
+    branches: [ dev-server, main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'zulu'
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Docker build
+        run: |
+          docker login -u ${{ secrets.DOCKER_HUB_USERNAME }} -p ${{ secrets.DOCKER_HUB_PASSWORD }}
+          docker buildx build --push --platform linux/amd64,linux/arm64 -t ${{ secrets.DOCKER_HUB_USERNAME }}/stockholm:${GITHUB_SHA::7} . 

server/008main_project/Dockerfile

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+# (1) base-image
+FROM openjdk:11
+
+# (2) COPY에서 사용될 경로 변수
+ARG JAR_FILE=build/libs/*-SNAPSHOT.jar
+
+# (3) jar 빌드 파일을 도커 컨테이너로 복사
+COPY ${JAR_FILE} app.jar
+
+# (4) jar 파일 실행
+ENTRYPOINT ["java","-jar","/app.jar"]