How to suppress warnings in docker-compose?

Question

In a development environment, using docker-compose with a compose file made for Docker Swarm, e.g.:

version: "3.8"
services:
  some-service:
    image: nginx
    ports:
      - "8080:80"
    configs:
      - source: some-config
        target: /etc/nginx/nginx.conf
configs:
  some-config:
    external: true

there's always a warning like:

WARNING: Some services (some-service) use the 'configs' key, which will be ignored. Compose does not support 'configs' configuration - use `docker stack deploy` to deploy to a swarm.

This main file is for production, and is combined with other compose file(s), adding bind mounts and debug configuration, but don't know how to remove the 'configs' key.

Is there a way to suppress this warning or remove the 'configs' key with a compose file override?

user_7920446 · Answer

The configs key is a multi-value option and canno't be overriden. An override file will concatenate its own values to the existing ones.

Ref: https://docs.docker.com/compose/extends/#adding-and-overriding-configuration

I suggest to keep the Swarm specific keys in a separate dedicated docker-compose file and combine it with the others when needed.

user_490188 · Answer

Docker-compose now has a log-level flag.

For example docker-compose --log-level ERROR run --rm .... This will suppress the warnings, but you will still see the container output.

How to suppress warnings in docker-compose?

2 Answers