This project is meant to turn a raspberry pi into a mini radio station the plays nothing but the 93 XRT radio station.
This has been tested on a raspberry pi running debian. docker, docker-compose and pulseaduio are required to be installed on the host system.
sudo apt install docker docker-compose pulseaudio
The most complicated part of this project is getting the audio from the docker container to play on the host system.
This is achieved by basically passing the pulseaudio server from the host system into to the container.
This requires the user inside of the docker container to have the same UID as the user launching the container on the host system.
The UID is passed into the container using the .env file. The required value can be foudn by running id -u on the host system and upating the .env file:
# update with value from running: id -u
UID=1000
Once the .env file has been updated with the neccessary user id, launch the container:
docker-compose up -d
-d flag launches container in background
I've run into a few issues on host system reboots. The host computer must start pulseaudio automatically, or the container will not be able to pass audio through.
On debian, it also seems like there could be a bit of race condtion between the docker daemon starting and pulseaudio.
Adding the following to your docker systemd configuration seems to fix this:
ConditionPathExists=/run/user/1000/pulse/native
the 1000 above being your UID in the .env file.