Variables set in .env is not present inside the docker container

Question

I have added a few variables in a .env file.

e.g.

POSTGRES_USER=user
POSTGRES_PASSWORD=pass

Postgres does not create a user with those credentials.

I can not see them when I run docker exec -it $(docker ps | ack postgre | cut -f1 -d\ ) env either.

Why isn't the environnment variables I set in .env honored when I start docker-compose?

Check if the variables are accessible in your container with docker-compose config. Do you see your variables? — n2o
– n2o, Commented May 15, 2017 at 15:41

martins · Accepted Answer · 2017-05-19 12:12:39Z

1

Turns out that one has to tell docker-compose that an .env file exists:

e.g.

web:
  env_file:
    - web-variables.env

answered May 19, 2017 at 12:12

martins

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