fix(build): Dockerfile 改为 jar-only 构建，修复策略组 DTO policies 类型为 List<Map<String,Object>>

docker-compose.yml

@@ -70,8 +70,8 @@ services:
 
   mci-server:
     build:
-      context: ./backend
-      dockerfile: mci-server/Dockerfile
+      context: ./backend/mci-server
+      dockerfile: Dockerfile
     container_name: mci-server
     profiles: ["app"]
     ports: