As a result of overlapping networks on same channel frequency, I’ve created a docker which runs periodically and publish to mqtt topic the number of networks per channel. It can be used for example to notify if too much netwroks are being detected on your channel.
I am not using Portainer and I am not sure what you mean by HA Add-on. The Wifiscan is just a simple docker image. Run it the way you run other dockers.
Note that I have tested it with Raspberry PI 3. It should run on teh different raspberry pi models but I am not sure about other platforms.