dockerdocker-composeenvironment-variablesdocker-swarmdocker-stack

How can I pass the variables I have placed in the .env file to the containers in my docker swarm?

I am trying to use the same docker-compose.yml and .env files for both docker-compose and swarm. The variables from the .env file should get parsed, via sed, into a config file by running a run.sh script at boot. This setup works fine when using the docker-compose up command, but they're not getting passed when I use the docker stack deploy command.

How can I pass the variables into the container so that the run.sh script will parse them at boot?

Solution

  • Actually I found the best/easiest way is to just add this argument to the docker-compose.yml file:

    env_file:
  - .env