Until I migrate the project to WebRTC from HLS this program is problematic to use even for me.
$ docker build -t dragon_fly .
$ docker network create --subnet=192.168.1.0/24 my_network # put your subnet instead of 192.168.1.0/24
$ docker run --network my_network -p 1234:1234 -v $(pwd):/app -v /tmp:/tmp dragon_fly
# if not runned
$ docker ps -a # to find container id
$ docker start CONTAINER ID