"""
v1 implements pure data transformations according to the Docker Image Specification v1.1.
https://github.com/docker/docker/blob/master/image/spec/v1.1.md
from collections import namedtuple
class DockerV1Metadata(namedtuple('DockerV1Metadata',
['namespace_name', 'repo_name', 'image_id', 'checksum',
'content_checksum', 'created', 'comment', 'command',
'author', 'parent_image_id', 'compat_json'])):
DockerV1Metadata represents all of the metadata for a given Docker v1 Image.
The original form of the metadata is stored in the compat_json field.