Add imageGet API endpoint #19
Description
https://docs.docker.com/reference/api/docker_remote_api_v1.15/#get-a-tarball-containing-all-images
Streaming TAR endpoint (refs #4)
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https://docs.docker.com/reference/api/docker_remote_api_v1.15/#get-a-tarball-containing-all-images
Streaming TAR endpoint (refs #4)