How do I change the base URL?

I have installed Gitea on kubernetes and left the default host URL as http://localhost:3000/ How can I now change this URL to my domain? I am using SQLite in a persistent AWS EBS volume. Can anyone confirm that both the SQLite based config data and the repo data are all stored on the data volume under /data?

I am running Gitea under a test domain and will change the domain to a production but I want to keep the repo data intact.

Providing access through another hostname must be done outside of Gitea; it isn’t involved in host naming or routing requests from clients to the server. You’ll need to setup some sort of proxy (in Kubernetes-land it would be an ‘ingress proxy’) listening on one or more IP addresses that you can put into DNS with the hostname you wish to use.