Node-RED in docker container on SONOFF iHost

I have been trying to find out whether the SONOFF iHost device will do anything useful for me. It runs NR inside a docker container, and this is my first experience with containers. The iHost firmware gives no real access to the container, so all I have been able to do is peek inside from NR, using exec and file nodes. The mqtt nodes appear to see the broker, which runs on a local RPi and works for other hosts on my LAN, but they do not connect. Advice on how to set up a terminal, fix the mqtt issue, and do anything else interesting would be welcome.

I wonder if you can install "portainer" and run/arrange everything from there, it would act like a jailbreak. If you cannot really see much from iHost in terms of what environment variables have been set etc.

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