As I lives in Indonesia, I would prefer to use GMT+7 as my selected timezone. It will make my log easier to check and also easier to find events at a certain time.
Below are a sample command to set timezone on Ubuntu based docker images :
################################################################# # Dockerfile for Excellent Ubuntu Standard # Based on Ubuntu 18.04 # Created by Masim Vavai Sugianto ################################################################# FROM ubuntu:18.04 MAINTAINER Masim Vavai Sugianto <mynickname@vavai.net> ARG DEBIAN_FRONTEND=noninteractive RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections && apt-get update && apt-get install apt-utils tzdata RUN echo "tzdata tzdata/Areas select Asia\ntzdata tzdata/Zones/Asia select Jakarta" > /tmp/tz ; debconf-set-selections /tmp/tz; rm /etc/localtime /etc/timezone; dpkg-reconfigure -f noninteractive tzdata