[FEAT] CI/CD 파일 수정

Author: lehojun

.github/workflows/deploy.yml

@@ -0,0 +1,51 @@
+name: Deploy Backend to EC2
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle
+        run: ./gradlew clean build -x test
+
+      - name: Create SSH key file
+        run: |
+          echo "${{ secrets.EC2_SSH_KEY }}" > private_key.pem
+          chmod 600 private_key.pem
+
+      - name: Deploy to EC2
+        run: |
+          scp -i private_key.pem -o StrictHostKeyChecking=no \
+            build/libs/*.jar ${{ secrets.EC2_USER }}@${{ secrets.EC2_HOST }}:/home/ubuntu/app.jar
+
+          ssh -i private_key.pem -o StrictHostKeyChecking=no \
+            ${{ secrets.EC2_USER }}@${{ secrets.EC2_HOST }} << 'EOF'
+            sudo systemctl restart studylink
+            sudo systemctl status studylink
+          EOF
+
+      - name: Clean up
+        if: always()
+        run: rm -f private_key.pem
+
+      - name: Send deployment notification
+        if: success()
+        run: echo "Deployment successful!"