We allow users to specify the server URL that the client will connect to using an environment variable:

REACT_APP_API_URL=https://my-server-url.com wasp deploy <provider> deploy

This feels like a workaround and not a real 1st part option of the Wasp Deploy feature. It would be better if we exposed an option:

wasp deploy <provider> deploy --custom-server-url https://my-server-url.com

This also makes it more future-proof as the environment variable might change from one Wasp version to another.