https://nix-ci.com/

https://nix-ci.com/documentation
https://nix-ci.com/documentation/getting-started
https://nix-ci.com/documentation/configuration
https://nix-ci.com/documentation/git-ssh-key
https://nix-ci.com/documentation/self-hosting

2025
https://talks.nixcon.org/nixcon-2025/talk/FHMLKZ/
    https://www.youtube.com/watch?v=cenmkrJHTGY