how to have a persistent id for a device in docker

[ljmerza]

i run rtlamr and rtl433 on two different rtl devices via docker. the issue im having is the path to the device changes on every reboot so i have to modify the device path ever boot. rtlamr always uses the first device found so i know to always set rtl433 as the second device. here's my docker compose

rtlamr:
    image: allangood/rtlamr2mqtt
    devices:
      - /dev/bus/usb

  rtl433:
    image: hertzg/rtl_433:latest
    devices:
      - '/dev/bus/usb/001/006'

and here's my lsusb:

Bus 001 Device 007: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
Bus 001 Device 006: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T

so the first device will always be picked up by rtlamr and the second device i have to change the - '/dev/bus/usb/001/006' part of the docker config every reboot. i cant seem to track down any ids for these devices or any other way to pass them down to docker and it be persistent on boot.

[hertzg]

This has been discussed a few times and there are multiple ways to solve it, short answer it's tricky to force kernel to have the same usb bus and device ids, on boot it most likely will be the same but the ids are not persistent by design.

Better option is to expose /dev/usb fully to the container and have rtl433 do the device selection. If you have multiple devices on the same host then make sure to program those to have different serial numbers and use the -d :serial flag to select it.

More info here #45 (reply in thread)