Here is a link on how to configure MakerAPI to talk with Homebridge and installing the Hubitat Plug-in for Homebridge. Hoobs is just a packaged version of Homebridge and you should follow their directions for installing plug-ins. It's the configuration on the Maker API and the config.json on Homebridge that is a bit confusing.
I have Homebridge working on a RPi4 using this image and it works flawlessly.
