You can use any CI/CD you want. The only reason GH is popular is that it's free for public repos.
But Forgejo does have a GH like CI/CD. If you really care about good CI/CD then you should try some of the alternatives out and decide what works best for your needs.
> The only reason GH is popular is that it's free for public repos.
It's also free for private repos, and I have both. Codeberg doesn't like private repos, so unfortunately I cannot just move everything to Codeberg. I'll probably set up a Forgejo VPS somewhere.
More than that, it is integrated with Github.
What can you recommend?