i have installed lms in docker as explain here:
https://github.com/hifiberry/hifiberry-os/blob/development/doc/docker.md
this work, i can play from spotify and radios,
but i cannot find my music files: they are in usb key mounted in pi. hifiberry os see the files ans i can play with hifiberryos.
so, how set the music folder in lms?