Docker container: license, upgrade and other question

[corrobor]

Hi to all.
from today I'm trying minimserver (I didn't know it) and i'm very happy: it is very beautifull.
I wiil do some experiment in trial mode and then i will buy license!
I have some doubt about docker container installation. In order:
I installed it as docker container: it run in a raspberrt4 that i use for my "home automation". It is all ok, i mount as volume my music folder in "/music".
Next I activated the trial license. After i recreated the image because I trivially added to the properties of the container the time zone and i lost the license and the configuration that i had done. So, is there a folder of the container that I can move out from container and mounting as volume to preserve my config, license etc?
otherwise when i get an update of the container i lose all...
anyway, how do I proceed in case of update (or reconfig)?
thanks!