jellyscrub Active but not working

[TheDreadPirate]

You don't HAVE to map a /jellyfin folder because in a typical setup the contents of that directory don't need to be permanent like they need to be for /config and /cache. But if you want to make a persistent change to index.html for jellyscrub you will need to create a permanent path for jellyfin-web.

You can map it anywhere as long as the container can access it. By setting up a volume on the host machine you are making jellyfin-web permanent between shutdowns.