SYNCRON WAKTU-docker

https://stackoverflow.com/questions/24551592/how-to-make-sure-dockers-time-syncs-with-that-of-the-host 

You can add your local files (/etc/timezone and /etc/localtime) as volume in your Docker container.

Update your docker-compose.yml with the following lines.

volumes:
    - "/etc/timezone:/etc/timezone:ro"
    - "/etc/localtime:/etc/localtime:ro"

Now the container time is the same as on your host.