This is minidlna on top of minimal debian distibution. It can be configured with environment variables.
Prefix any config directive of minidlna with MINIDLNA_
and run your container:
docker run -d --net=host -v <media dir on host>:/media \
-e MINIDLNA_MEDIA_DIR=/media \
-e MINIDLNA_LISTENING_IP=192.168.0.5 \
-e MINIDLNA_PORT=8200 \
-e MINIDLNA_FRIENDLY_NAME=callisto \
bobrik/minidlna
See: http://manpages.ubuntu.com/manpages/raring/man5/minidlna.conf.5.html
Let me know if you figure out how to run it without --het=host
.