This maps the devices from the host into the running container. It is technically not required here since we are using a privileged container but i would like to make the container not privileged and add required capabilities for rpiplay to run as a stretch goal.
https://github.com/rahul-thakoor/air-pi-play/blob/75e31b63debc3b5ef3791320563ad48119094f1b/docker-compose.yml#L9-L10
I would like to know what are these lines about