feat(task5): update docker-compose build.context paths

docker-compose.yml

@@ -17,7 +17,7 @@ services:
     command: --default-authentication-plugin=mysql_native_password --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
 
   backend:
-    build: ./backend
+    build: ./apps/server
     container_name: dorm_billing_backend
     restart: always
     ports:
@@ -34,7 +34,7 @@ services:
       - mysql
 
   frontend:
-    build: ./frontend
+    build: ./apps/admin
     container_name: dorm_billing_frontend
     restart: always
     ports: