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Environment variables interpolation not supported #140
Description
Hey!
Just got my macbook pro, and decided to code my stuff on it with container compose.
The biggest issueI just came across is variable interpolation.
Here is the file:
services:
redis:
image: redis:7-alpine
container_name: victoria-redis
ports:
- "6379:6379"
command: ["redis-server", "--requirepass", "${REDIS_PASSWORD:-devpassword}"]
env_file:
- .env
volumes:
- redis_data:/data
restart: unless-stopped
volumes:
redis_data:and .env:
REDIS_PASSWORD=mypassword
You would expect to be able to connect to redis://localhost:6379 with the password "mypassword" right?
Wrong! Unlike with docker, the password will be "${REDIS_PASSWORD:-devpassword} ", literally.
This has been a very annoying issue I came across.
Hoping it'll get fixed soon!
Cheers,
Adam
Activity
TheDogHusky commentedon Jul 23, 2026
Seems like this pr fixes it
Mcrich23 commentedon Sep 9, 2026
Sorry for the delay getting back to you. I wasn't able to work on open source for most of the summer. Command arguments currently aren't interpolated, which explains the literal password.
#146 addresses this specific case; #102 doesn't cover command arguments. Once #146 lands, would you mind trying your Redis example again and letting me know whether it uses the expected password?
TheDogHusky commentedon Sep 9, 2026
Of course, i'll be more than happy to try it out!