I am trying to get a Raspberry Pi 3 Relais Board up and running. The board connects via i2c and i really searched the whole forum and tried everything from Fleet Configuration (dtoverlay=i2c1=on, etc.) to reload the kernel modules in the Dockerfile (modprobe i2c-dev).
We use a RPi3 with the resin/raspberrypi3:latest image.
Hope you can help me