Using docker-compose to set containers timezones

Question

My docker-compose file has some running docker files to create my containers. I don't want the docker files to set the timezones.

I have a docker-compose.override.yml file to make the local changes. One of my containers seems to not pull the host time zone and that is causing problems for me. Now, I want to enforce timezones on all my containers. In my Dockerfiles right now I am doing:

ENV TZ=Canada/Alex RUN ln -snf /user/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

How can I replicate this command for docker-compose syntax? 

Answer 1

• Try out the following code:

         I hope it will be helpful for you.

version "2"

services:
  serviceS:
    ...
    environment:
      TZ: "Canada/Alex"
    command: >
      sh -c "ln -snf /usr/share/zoneinfo/$TZ /etc/localtime &&
      echo $TZ > /etc/timezone &&
      exec my-application"

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Comments

Hiii thanks for the answer this helps !!!

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Alexjoy has not asked this in the question for it but you can add exec my-main-application to show how the main process would be specified. exec is important here to make sure that my-main-application receives Ctrl-C (SIGINT/SIGKILL)

Answer 2

The simplest way to change the time in a Docker container is to change the time using ‘date’ command after connecting to the container.

docker exec -it container-name /bin/bash

date +%T -s "10:00:00"

Comments

Thank you for this solution.

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This worked for me...Thank you for explaining it well.

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If you don't want dockerfile to set timezones this is the best way to achieve it.

Answer 3

The question didn't ask for it but I've just added exec my-main-application to show how the main process would be specified. exec is important here to make sure that my-main-application receives Ctrl-C (SIGINT/SIGKILL)

Answer 4

Using the below command will be the simple solution for using docker-compose to set containers timezones:

environment: 

- TZ=America/Denver