Expected Behavior

kompose should honor the COMPOSE_FILE env var.

In short, this envvar allows to define which yamls to load by default instead of the default docker-compose.yml if no -f params are given. It is a nice alternative to explicitly set them with -f each time you run a docker compose command.

Actual Behavior

Currently kompose ignores COMPOSE_FILE (and just defaults to docker-compose.yml if -f is not set)

Steps To Reproduce

1. Create a docker-compose.yml and a docker-compose.alternative.yml configs that have visible differences
2. Run COMPOSE_FILE=docker-compose.alternative.yml kompose convert -o output.yml
3. See that the docker-compose.yml was converted

Kompose Version

1.31.1 (46dcb9181)

Docker-Compose file

# docker-compose.yml
version: "3"
services:
  test:
    image: debian
---
# docker-compose.alternative.yml
version: "3"
services:
  test:
    image: alpine

Anything else?

No response