Export an image

Get a tarball containing all images and metadata for a repository.

If name is a specific name and tag (e.g. ubuntu:latest), then only that image (and its parents) are returned. If name is an image ID, similarly only that image (and its parents) are returned, but with the exclusion of the repositories file in the tarball, as there were no image names referenced.

Image tarball format

An image tarball contains Content as defined in the OCI Image Layout Specification.

Additionally, includes the manifest.json file associated with a backwards compatible docker save format.

If the tarball defines a repository, the tarball should also include a repositories file at the root that contains a list of repository and tag names mapped to layer IDs.

{
  "hello-world": {
    "latest": "565a9d68a73f6706862bfe8409a7f659776d4d60a8d096eb4a3cbce6999cc2a1"
  }
}