When you run a Docker container of Linux, you can notice that it uses UTC timezone by default:
$ docker run -it ubuntu root@bd08a5ee9d0b:/# date Thu Oct 3 05:13:25 UTC 2019
This can be inconvenient if you plan to use the container to run applications that log with timestamps. Such timestamps would be confusing when you view them outside the container.
To run a Docker container of Linux with your local timezone, map your local
/etc/localtime inside the container:
$ docker run -v /etc/localtime:/etc/localtime -it ubuntu root@ce119be54aca:/# date Wed Oct 2 22:16:03 PDT 2019
Tried with: Docker 18.09.6 and Ubuntu 18.04