Merge pull request #732 from giladAlboher/update-docs

In contributing.MD I have added a reminder to use Docker-compose up t…

Author: TyrinH

CONTRIBUTING.md

@@ -69,8 +69,10 @@ To get started with Code Racer locally, follow these steps
    ```sh
    npm i
    ```
-
-8. (Optional if using Docker for managing the database): Start the Database.
+   
+8. Start the Database
+    If you are using Docker don't forget to run `docker-compose up` to start the database.
+    (Optional if using Docker for managing the database): Start the Database.
 
    ```sh
    npm run dev:db