I already have your node-red installed 
Now I just need to work out how to integrate it with HA…
I discussed it a bit in your repo thread… Repository: NotoriousBDG Add-Ons (Node-RED, HA Bridge, and Gogs)
I was thinking that, if a best practice HA <> Node-red integration is identified, the install of the node-red components for HA could be included in the hass.io addon so its integrated “out of the box”.
E.g. for node-red-contrib-home-assistant you dockerfile could install the node-red addon with (something like):
RUN cd ~/.node-red && npm install node-red-contrib-home-assistant