Docker Compose Set Timezone

I’m going to assume you have SSH and/or ftp access to modify the ‘compose.yaml’ file that you intend to modify.

All we need to do is add the ‘TZ’ variable to the environment section with your timezone name that you can get from Wikipedia here, like so.

services:
  service_name:
    environment:
      - TZ=America/Edmonton

services:
  service_name:
    environment:
      - TZ=America/Edmonton

All you have to do for portainer is create a new environment variable called TZ with the value of your timezone, like so:

Click Deploy just above the advanced section, then your container will be recreated with the new environment variable!

Let’s edit the compose file:

nano compose.yaml

nano compose.yaml

or…

sudo nano compose.yaml

sudo nano compose.yaml

Depending on what your permission for your file is.

Edit your compose file:

Go to the Wikipedia page here and look up your Timezone in the table.

Copy/Paste the ‘TZ Identifier’ and add it to your Docker Compose file like so. If you don’t have the ‘environment’ section, you can copy and paste this.

    environment:
      - TZ=

    environment:
      - TZ=

YAML

Make sure you have 4 spaces from the start of the line and 2 spaces from the start of the ‘environment’ section on the next line for the ‘- TZ=’ section(6 from the beginning of the line). YAML is space-sensitive, so it will fail to compile if the spaces are wrong.

You should validate the file to make sure you don’t get any errors. All you need to do is type.

sudo docker compose -f compose.yaml config

sudo docker compose -f compose.yaml config

You should get the output of the file if it validated correctly:

sudo docker compose -f compose.yaml up -d

sudo docker compose -f compose.yaml up -d