Feature #33 : CD 설정

.github/workflows/main-cd.yml

@@ -0,0 +1,50 @@
+name: Backend CD (Deploy to AWS EC2)
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    name: Deploy to AWS EC2
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v3
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build Project
+        run: ./gradlew build --stacktrace
+
+      - name: Package JAR File
+        run: cp build/libs/*.jar app.jar
+
+      - name: Deploy to AWS EC2
+        uses: appleboy/scp-action@v0.1.4
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          username: ${{ secrets.SSH_USER }}
+          key: ${{ secrets.SSH_KEY }}
+          source: "app.jar"
+          target: "~/backend"
+
+      - name: Restart Backend on EC2
+        uses: appleboy/ssh-action@master
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          username: ${{ secrets.SSH_USER }}
+          key: ${{ secrets.SSH_KEY }}
+          script: |
+            cd ~/backend
+            pkill -f 'java -jar' || true
+            nohup java -jar app.jar > log.txt 2>&1 &