OwnTone Docker image
https://hub.docker.com/r/matthenning/owntone
You need to pass your desired admin password via environment variable OWNTONE_PASSWORD and map your media directory to /srv/music.
Additionally you can set OWNTONE_UID and OWNTONE_GID to change the owntone user's uid and gid. This can be useful to map the container users to a host user with permissions on the mapped media volume.
Example:
docker run -p 3689:3689 -e OWNTONE_PASSWORD='password' -e OWNTONE_UID='1234' -e OWNTONE_GID='1234' -v /media/music:/srv/music -d matthenning/owntone:latest