Fix services ordering

README.md

 build and run MongoDB and Node.js API with `orders.json` dump:
+
+(run `mongo-seed` first !!)
+
 ```
-docker-compose up --build -d
+docker-compose up --build -d mongo-seed
+docker-compose up -d
 ```
 
+
+
 use mongodb (mongo shell):
 ```
 docker-compose exec mongo-orders mongo admin