Is it possible to deploy this behind a reverse proxy?

[m3lv1lle]

It would be nice to be able to access it from everywhere.

[Jurrer]

Yes, you deploy it as any other application behind the proxy.
You have to create two endpoints, web and backend.
Be sure to specify them in the env vars later - this app must know what they are to generate shareable links and stuff

[webysther]

The LSIO bundle make this more easy: https://docs.linuxserver.io/images/docker-your_spotify/