Gitea won't accept a root URL

Having upgraded to ElectricEel-24.10.0.2 I am once again trying to install Gitea, in hopes that the switch to Docker makes it easier to back up and restore the config.
But it can’t be installed.
I have to supply a root URL, but the text box won’t accept any text, reporting “Invalid format or character” no matter what I type.

Can someone tell me how to get this thing running?
Or even even try installing it and see if you get stuck where i did.

The “invalid format or character” error disappears once you entered a valid URL.

If you set the gitea WebUI Port to 30008 (default) and your TrueNAS hostname is truenas.local (default) you could set the URL to http://truenas.local:3008. You can also use the IP if you prefer it over the hostname.

It looks like the validation that it uses to determine a valid URL requires at least one dot character.

Hah!
If I’d just carried on I would have got there.

Thank-you.

Now onto figuring out how to backup and restore our config and data for DR