After restart have to reauthorize homebridge app at Ecobee
Whenever the docker image restarts or goes down and brought back up I have to reauthorize homebridge app at Ecobee. The Homebridge plugin repo has this closed issue about it. 
https://github.com/vojtamolda/homebridge-ecobee3-sensors/issues/10

Anyone else running into this issue?
The first reply give a pretty strong clue to what might be occurring but as this is all managed by this docker image I'm not sure how to fix it.