docker_image: load image without specifying the name

[AssafKatz3]

SUMMARY

Currently docker_images module does not allow to load images from a TAR file without specifying the name of the image, which besides is an issue by itself (sometimes You don't know image name upfront) but most importantly does not allow to load multiple images from one tar file

ISSUE TYPE

• Feature Idea

COMPONENT NAME

docker_image module

ADDITIONAL INFORMATION

"Name" parameter should not be required if load_path is specified (and the name itself should be determined by ansible/docker) or "Name" can persist required but should have some value like "as original" or "as_load"

Use cases:

1. Loading a few images saved in one tar file
2. Loading images for which You don't know the name upfront (for example if You want to get the latest version not knowing exactly what the version is or simply development team is saving images to file and their name are hashed or so)

- name: Load images from the archive 
  docker_image:
    name: [some_new_parameter]
    load_path: my_images.tar

This issue is still existing (at least at documentation) as was three years ago.

[felixfontein]

That's how the docker_image module works, and it won't change. If you want to load multiple images from a tar file, or don't know the image name, use the docker_image_load module.

[felixfontein]

(See also #86.)