Unless it's changed since I looked at it, it requires MS SQL Server, which does run on linux, but isn't FOSS, and is very expensive to license if you aren't already using it.
> and is very expensive to license if you aren't already using it.
Not FOSS, but the express edition is free as in beer and the limits should not matter at all for bitwarden (I think the main one is max 10 GB). I prefer KeepassXC + Keepass2Android + Nextcloud though ;)