env_file directive in docker_container tasks has no effect since 3.0.0

[OrfeasZ]

SUMMARY

env_file directive in docker_container tasks has no effect.

ISSUE TYPE

• Bug Report

COMPONENT NAME

docker_container

ANSIBLE VERSION

ansible [core 2.12.5.post0]
  config file = None
  configured module search path = ['/home/runner/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.8/site-packages/ansible
  ansible collection location = /home/runner/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.8.13 (default, Jun 24 2022, 15:27:57) [GCC 8.5.0 20210514 (Red Hat 8.5.0-13)]
  jinja version = 2.11.3
  libyaml = True

COLLECTION VERSION

3.0.0

CONFIGURATION

Unable to get at this time since we are running through AWX.

OS / ENVIRONMENT

Target machines are running Ubuntu 20.04 with Docker 20.10.11.

STEPS TO REPRODUCE

docker_container:
    name: my-container
    state: started
    image: my-image:latest
    env_file: /my-env-file.env

EXPECTED RESULTS

The created docker container should inherit the environment variables from the file specified in the env_file key.

ACTUAL RESULTS

The created docker container doesn't have any environment variables set.

This issue seems to have been introduced in yesterday's 3.0.0 release, causing deployments across our entire cluster to fail. Downgrading to 2.7.0 resolved this issue.

[felixfontein]

Thanks for reporting this!

Looks like the env_file tests were totally inadequate of testing whether the option actually works... #452 improves the env and env_file tests and fixes this issue.