edited docker config for backend

docker-compose.yml

@@ -19,15 +19,19 @@ services:
     ports:
       - "8002:8002"
     environment:
+      NODE_ENV: production
       DB_HOST: mysql
       DB_USER: root
       DB_PASSWORD: ${DB_PASSWORD}
       DB_NAME: borrow_system
     depends_on:
       - mysql
-    volumes:
-      - ./backend:/borrow_system-backend
     restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:8002/server-info"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
 
   mysql:
     container_name: borrow_system-mysql