Minor bug report: spotify authentication flow returns to localhost:port even when running on remote server

[dchawisher]

I run containerized apps on a NAS and access them through my laptop browser. E.g. "nas.local:5050" or through a reverse proxy. Following the spotify authentication flow takes me to localhost:5050 + the authentication token, which obviously does not work in my case. Fortunately, this is easily solved by replacing "localhost" with my NAS ip, so the bug does not prevent any functionality.

Thanks for your great work to revive this project!