Quadlet Environment Problems

[kaaax0815]

I want to reuse environment variables, such that I define them once in the env file and reference them multiple times in other containers.

This would be the docker-compose version

services:
  postgres:
    ...
    env_file:
      - .env
    environment:
      - POSTGRES_DB=test
      - POSTGRES_USER=${DB_USER}
      - POSTGRES_PASSWORD=${DB_PASSWORD}

The corresponding .env file:

DB_USER=test
DB_PASSWORD="test"

My approach using quadlet

[Container]
...
EnvironmentFile=.env
Environment=POSTGRES_DB=test
Environment=POSTGRES_USER=${DB_USER}
Environment=POSTGRES_PASSWORD=${DB_PASSWORD}

But this does not work as postgres complain that no password is set. How would i solve this?

[askoa]

Try using POSTGRES_USER=test and POSTGRES_PASSWORD=test in the .env file and remove the entries from [Container] section.

[kaaax0815]

the .env is used in other services as well. and some services expect a specific env var. and i don't want to duplicate anything

[Luap99]

That is not expected to work as there is no env interpolation happen in quadlet, see
#26997