Dockerfile

FROM alpine:3.6
MAINTAINER Andreas Linz "klingt.net@gmail.com"

# install requirements
RUN apk update &&\
    apk add python3\
            ffmpeg\
            flac\
            curl

RUN pip3 install --upgrade pip &&\
    pip3 install cherrypy &&\
    pip3 install cherrymusic==0.40.0

# set locale
ENV LANG en_US.UTF-8
ENV CM_USER cm

# create user that runs cherrymusic
RUN adduser -h /home/${CM_USER} -s /sbin/nologin -D ${CM_USER}
RUN su -s /bin/sh ${CM_USER} -c "mkdir -p \
    ~/.config/cherrymusic \
    ~/.local/share/cherrymusic \
    ~/basedir"

EXPOSE 8080

# mount your music folder into the basedir (docker run -v /path/to/music:/home/cm/basedir)
# and do the same for the config and share folder
VOLUME  /home/${CM_USER}/.config/cherrymusic \
        /home/${CM_USER}/.local/share/cherrymusic \
        /home/${CM_USER}/basedir

COPY entrypoint.sh /

WORKDIR /home/${CM_USER}
CMD su -s /bin/sh -c 'cherrymusic' - ${CM_USER}
ENTRYPOINT ["/entrypoint.sh"]