This is going to sound weird, but I think I tried it a few days ago on my server. I never installed it at the time because of all of their setup steps to enable OICD login. I’ve been on the hunt for a OICD/SSO compatible one since Vaultwarden isn’t yet capable of such a thing. I just installed Authentik and it sparked the search. LOL - I’ve used Vaultwarden for a few years now and have yet to find anything quite as capable as it for managing my well over 500 logins I’ve accumulated over the years.
Your post got me to install it and I believe it will work, I’m testing it and can report later if you want. :)