docker exec -it funkwhale manage createsuperuser
(for ease of access, set it as your Saltbox user and password.)
enter the exit command when finished to return to your server's shell.
Now configure these settings via the web GUI
Access Funkwhale, visit https://funkwhale._yourdomain.com_ and log in with the user and password you just created.
Enter Music->Add Content->Create a new Library and fill out the information.
Enter your new Library and Details. There will be a sharing link such as:
https://funkwhale.domain.com/federation/music/libraries/da8bd97b-3c3f-4e7b-92cb-6ba45721837b
Copy out the last portion: da8bd97b-3c3f-4e7b-92cb-6ba45721837b
Return to the shell session to import music library
If you want to use subsonic clients then you'll need to set a password here: https://funkwhale.domain.com/settings
(subsonic protocol requires storing password in cleartext, so to avoid compromising your Funkwhale account, we use a different password).