Home Assistant Docker Container Tip for Serial

[lllgtlll]

Just posting this in case someone comes across the same issue that I did.

I'm running Home Assistant with the container version on a Linux machine. I have a serial to USB connection from a 15K direct to home assistant machine. In order for this to function correctly the HA container needs to have access to the host serial port (in my case ttyUSB0). There are a number of ways to do this as discussed in the posts below.

https://stackoverflow.com/questions/24225647/docker-a-way-to-give-access-to-a-host-usb-or-serial-device
https://www.losant.com/blog/how-to-access-serial-devices-in-docker

I use docker compose so I had to make the following adjustment to my docker compose yaml file:
homeassistant:
container_name: homeassistant
image: "ghcr.io/home-assistant/home-assistant:stable"
volumes:
- /dev:/dev
As the articles mention, there are other more secure ways to do this.

Of note, I had the HA container setup as privileged before making this change which I thought was enough, but I was not able to get the serial reads with that alone.