Support stable URLs for endpoints

Hey gitpod team,

I'm on the premium plan and using one of my workspaces for development work on a repo. I've proxied a url e.g. dev.my-url.com to the url of the exposed port when I'm running the site so I can preview the work on my domain url (because some services I use the api keys are tied to the url) and also I can remember it then etc.

Anyway, this has been working fine, but today I opened the workspace and ran the site on the port, but it seems the workplace url has changed. Is this something that is expected? As in the same workspace may have a different url? I've not created a new workspace from the same repo or anything like that. I can reset up the proxy to the new url, but I would rather not have to keep doing this if it can be avoided. I expect to be working on this project for a few months.

Thanks 😄