podman-docker: docker_image fails silently without archiving despite archive_path being specified

[mohd-akram]

SUMMARY

docker_image fails silently without archiving despite archive_path being specified (happens when using docker via podman-docker).

ISSUE TYPE

• Bug Report

COMPONENT NAME

docker_image

ANSIBLE VERSION

ansible [core 2.12.1]
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/mohamed/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/mohamed/.local/lib/python3.10/site-packages/ansible
  ansible collection location = /home/mohamed/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/mohamed/.local/bin/ansible
  python version = 3.10.2 (main, Jan 17 2022, 00:00:00) [GCC 11.2.1 20211203 (Red Hat 11.2.1-7)]
  jinja version = 3.0.1
  libyaml = True

COLLECTION VERSION

Collection       Version
---------------- -------
community.docker 2.1.1

CONFIGURATION

OS / ENVIRONMENT

Fedora 35

STEPS TO REPRODUCE

sudo ansible -m docker_image -a 'name=redis source=pull archive_path=redis.tar' -c local localhost

EXPECTED RESULTS

"actions" should have "Archived image ..."

ACTUAL RESULTS

localhost | CHANGED => {
    "actions": [
        "Pulled image redis:latest"
    ],
    "changed": true,
    "image": null
}

[felixfontein]

I guess there is some incompatibility between how podman-docker and Docker work. As you can see in "image": null returned by the module, the module was not able to find the pulled image. It uses the same image name and tag it uses for pulling.

A wild guess is that podman-docker allows to pull images by Docker short name, but does not allow to find them by Docker short name. You might want to try using docker.io/library/redis instead of redis, which is the full name of the image.

[felixfontein]

I created a fix that might solve this: #292. Would be great if you could try it out! (Then you can keep using the short name redis.)