A guy named Joshua Stein wrote a bitwarden database server in Ruby + SQLite. This one is perfect for small/personal installations as it runs in a 50MB Docker container and can be setup in a few minutes and even runs on a Raspberry Pi (compared to the official Docker zoo optimised for the Microsoft Azure cloud).
I know you already support him in a way that you report upcoming changes to the API, etc. - which is awesome already. But I’d sleep better if you could make bitwarden-ruby an official and supported part of Bitwarden.
However, a small alternative Core as an official and supported part of Bitwarden would be much preferred.