Prevents this error, when you know what you're doing:
Error: failed to update DNS records pointing to caddy service: create cluster domain records in Uncloud DNS: rpc error: code = Unknown desc = Post "/domains/ctrl.u.science.ru.nl/records": unsupported protocol scheme ""
Signed-off-by: Miek Gieben <miek@miek.nl>
This allows manual setting of the cluster's domain name. I use this to
make the local cluster admin aware that this has been done.
(and then manually update the external dns)
```
% uc dns set ctrl.u.science.ru.nl
Set cluster domain: ctrl.u.science.ru.nl
Deploy the Caddy reverse proxy service ('uc caddy deploy') to enable internet access to your services via the reserved or your custom domain.
% uc dns show
ctrl.u.science.ru.nl
% uc dns set ctrl.u.science.ru.nl
Error: domain already reserved
% uc dns release
Released cluster domain: ctrl.u.science.ru.nl
```
See: #37
Signed-off-by: Miek Gieben <miek@miek.nl>
Miek Gieben