fix: make Blue-Green deployment safe by checking Nginx reload status and removing redundant host Gradle build to prevent OOM server crashes

.gitea/workflows/deploy.yml

@@ -26,17 +26,7 @@ jobs:
         run: |
           echo "Starting Blue-Green CI/CD Deploy pipeline..."
           
-          # 1. gradle 공식 이미지로 바로 컴파일 빌드!
-          docker run --rm \
-            -v /home/ubuntu/app/ax_hub_mcp_tool:/app \
-            -v /var/run/docker.sock:/var/run/docker.sock \
-            -v /home/ubuntu/.gradle:/home/gradle/.gradle \
-            -w /app \
-            gradle:8-jdk21 \
-            ./gradlew clean bootJar -x test
-          
-          # 2. 빌드 결과 plain jar 아카이브 정리
-          find /app -name "*-plain.jar" -delete
+          # 1. (제거됨: 호스트 볼륨에서의 불필요한 gradle 빌드 제외 - Dockerfile 내에서 이미 수행하므로 OOM 방지)
           
           cd /app
           
@@ -104,10 +94,18 @@ jobs:
           echo "Health Check Passed! Switching traffic to $TARGET..."
           mkdir -p ./nginx/conf.d
           cp ./nginx/${TARGET}.conf ./nginx/conf.d/default.conf
-          docker compose exec -T nginx nginx -s reload
+          
+          if ! docker compose exec -T nginx nginx -s reload; then
+            echo "Nginx reload failed! Rolling back Nginx configuration..."
+            cp ./nginx/${OLD_TARGET}.conf ./nginx/conf.d/default.conf
+            docker compose exec -T nginx nginx -s reload || true
+            echo "Stopping failed $TARGET containers..."
+            docker compose stop gateway-$TARGET tool-sms-$TARGET tool-email-$TARGET tool-other-$TARGET tool-payment-$TARGET
+            exit 1
+          fi
           
           # 7. 구버전 종료
-          echo "Traffic switched. Stopping old $OLD_TARGET containers..."
+          echo "Traffic switched successfully. Stopping old $OLD_TARGET containers..."
           docker compose stop gateway-$OLD_TARGET tool-sms-$OLD_TARGET tool-email-$OLD_TARGET tool-other-$OLD_TARGET tool-payment-$OLD_TARGET
           
           # 가비지 청소