[FEAT] CI/CD 파일 수정

Author: lehojun

.github/workflows/deploy.yml

@@ -33,10 +33,25 @@ jobs:
 
       - 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
+          max_retries=3
+          retry_count=0
 
-          ssh -i private_key.pem -o StrictHostKeyChecking=no \
+          while [ $retry_count -lt $max_retries ]; do
+            if scp -i private_key.pem -o StrictHostKeyChecking=no -o ConnectTimeout=10 \
+              build/libs/*.jar ${{ secrets.EC2_USER }}@${{ secrets.EC2_HOST }}:/home/ubuntu/app.jar; then
+              break
+            fi
+            retry_count=$((retry_count + 1))
+            echo "SCP failed. Retrying ($retry_count/$max_retries)..."
+            sleep 5
+          done
+
+          if [ $retry_count -eq $max_retries ]; then
+            echo "SCP failed after $max_retries attempts"
+            exit 1
+          fi
+
+          ssh -i private_key.pem -o StrictHostKeyChecking=no -o ConnectTimeout=10 \
             ${{ secrets.EC2_USER }}@${{ secrets.EC2_HOST }} << 'EOF'
             sudo systemctl restart studylink
             sudo systemctl status studylink