Self-Signed Certificates for Linux Desktop Client

I am trying to use a self-hosted version of Bitwarden via the Linux desktop client on Ubuntu 18.04. The instance is installed on my local machine, and I’m working on installing the self-signed cert so I can use the desktop and CLI apps with it. So my main question is, exactly which certificate store does the Linux desktop client read? The process for installing the self-signed cert in Chromium is fairly straightforward, but I can’t find any docs about this for this client since there isn’t really a “standard” Linux certificate store.