Docker for Oracle Timestamp out of sync
The problem is not with your database, it is the problem of the docker.

Docker has notorious problems with the time synchronization between the host machine and the virtual machines ("containers"...).

The simplest solution for the problem if you start the docker container with admin privileges (--privileged flag to docker run), and then use a time synchron tool inside the container to fix its time (ntpdate -s your.country.clock).