Using docker-compose to set containers timezones

Question

I have a docker-compose file running a few Dockerfiles to create my containers. I don\'t want to edit my Dockerfiles to set timezones because they could change at any time b

Answer 1

This is simple solution:

environment:
  - TZ=America/Denver

Answer 2

version "2"

services:
  serviceA:
    ...
    environment:
      TZ: "America/Denver"
    command: >
      sh -c "ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && 
      echo $TZ > /etc/timezone &&
      exec my-main-application"

Edit: 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 3

The easiest solution would be share volume in docker-compose.yml like this

ipchanger:
  image: codertarasvaskiv/ipchanger:raspberry
  volumes:
    - "/etc/localtime:/etc/localtime:ro"

• ro - means container can only read from /etc/localtime of host-machine.

Answer 4

 version: '2'
 services:
   ServiceA:
     image: image:
   - '/etc/localtime:/etc/localtime:ro'

Answer 5

version: '3.6'
services:
  mysql:
    image: mysql:5.6
    restart: always
    container_name: dev-mysql
    command: mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
    restart: always
    environment:
     - TZ=Asia/Shanghai
     - MYSQL_ROOT_PASSWORD=password # set the root password
    ports:
      - '3306:3306'
    volumes:
      - "/etc/localtime:/etc/localtime:ro"
      - "/etc/timezone:/etc/timezone:ro"

This my docker-compose.yaml of mysql

Reminder,you need recreate container,other than restart. if you change the yaml need to recreate

docker-compose -f docker-compose.yaml stop
docker-compose -f docker-compose.yaml rm
docker-compose -f docker-compose.yaml start