Depends on how the server was setup. Ubuntu has offered importing public keys from github for quite a while in its installer. If you're using terraform/ansible/

Depends on how the server was setup. Ubuntu has offered importing public keys from github for quite a while in its installer. If you're using terraform/ansible/some other IaC tool, adding a key is probably just 1-2 lines of code. Some OS, like Guix or NixOS, also allow you to define them in a config file. Worst case you can just do something like `curl -L github.com/username.keys >> .ssh/authorized_keys`.