All clients starts two hour later than backup windows

I use server version 2.2.11 in a docker container because Urbackup on my Synology nas doesn’t work anymore.
Now all clients doesn’t follows the time fixed on the backup Windows but they starts exactely two hours later.
I verify the correctness of the date/hour on the nas.

It uses local time in the server, so you probably didn’t adjust the time zone in your docker container to the correct time zone. If you google for that you find a lot of information on how to do that. Unfortunately it doesn’t seem like Docker does it automatically, so it should be on the default UTC time zone.

Thanks Uroni, unfortunately I am a dummy user for docker