Hello,

We are trying to integrate Coder OSS with Github EMU and the usernames format there contains "_"(underscore).
Coder is not allowing to have usernames with such symbol and hence throwing an error: "Username must start with a-Z or 0-9 and can contain a-Z, 0-9 or -" for new users, that are trying to sign-up, using Github OAuth app.

Appreciate if someone can help or point out to guidance on how to either change that rule or use some other field as a username or crop the existing emu handle to remove anything after "_"?