Update main-cd.yml (#17)

Author: wodydl0

.github/workflows/main-cd.yml

@@ -37,6 +37,11 @@ jobs:
               cd /home/ubuntu/ring-us-server
             fi
 
+            # 🛠 Gradle 빌드 권한 설정
+            echo "[GitHub Actions] 🔧 Fixing Gradle permissions"
+            sudo chown -R $USER:$USER ~/.gradle
+            sudo chmod -R 777 ~/.gradle
+
             # 권한 설정 (dev.sh 실행 가능하도록, 추후에 deploy.sh와 분리)
             chmod +x dev.sh