Thanks for the reply.
Adding subdomains to codeberg.org would open security vulnerability and CSRF attack surface. For details see this blog.
I think this is covered in gitlab with domain verification: https://about.gitlab.com/handbook/support/workflows/verify_pages_domain.html
This would however require wildcard SSL and some custom server setup (not impossible but not a priority either, contributions for such a setup surely welcome!).
Let's encrypt allows Wildcard Certificates (for example: https://dev.to/nabbisen/let-s-encrypt-wildcard-certificate-with-certbot-plo)
The simple goal of pointing a custom domain to a custom codeberg page can get achieved without the above, using the URI record (see https://en.wikipedia.org/wiki/URI_record for background and example). Also redirect services.
A link to a service or a tutorial would be great. Since I couldn't find anything (probably looking in a wrong way): https://www.digitalocean.com/community/questions/digitalocean-dns-where-is-the-redirect-alias-dns-record
Thank you.
In https://mastodon.technology/@codeberg/103947132581783430 it was suggested that it is implemented. Maybe one can provide a short tutorial on how to do it with one of the domain providers, Gandi or Namecheap or whatever. What kind of the DNS record I should set up?
Any updates on this? Why this was closed?