What is the problem?
I am currently switching to Docker to host my various in-house services and started working on OctoPrint. My testing includes making sure that relevant data is retained on the data volume when the image changes.
My issue is that OctoPrint seems to keep it's configuration, but loses all plugins. They're just "gone", but you can still see traces of them in the config.yaml (update check) and some folders they create in /data.
What did you already try to solve it?
Try both ocroprint/octoprint and nunofgs/octoprint and searched forums to no avil.
Additional information about your setup
Current 1.3.9 release