Though the game contains a http server to serve the controller web app, it is rather inconvenient to use during development. To instead use the normal React development server to serve the controller web app while still being able to connect to the game via websockets, use this proxy application.
Further instructions and explanation in the README.md in the above folder.
You should orient yourself on the README.md in the above folder.
We use yarn for managing dependencies and building this proxy. Run the following commands to retrieve dependencies and start the proxy:
yarn install
yarn start