Automatic node ID's are now also supported!
There is a step-by-step install guide here:
https://github.com/tsathishkumar/MySController-rs/issues/30
You can easily run this alongside Domoticz.
Burn an image for the Mozilla Gateway onto an SD card.
Follow the guide above to install MySController-rs.
Install Domoticz at port 8081 and 444 (instead of 8080 and 443, as the Mozilla Gateway is already at those ports).