This will run a simple "Hello World!".

The Dockerfile does not expose any ports. The webserver will by default listen on port 4001. You must expose when using docker run or docker compose the port 4001 or set a new port and expose.

You can customize the port by adding an enviorment variable WEB_SERVER_PORT with the port number WEB_SERVER_PORT=4002 would overide the default value and listen on port 4002.