(estesp): until we have a more complete method for index push, we need to report

[piascikj]

missing dependencies in an index/manifest list by sensing the "400 Bad Request"
as a marker for this problem

opened via imdone.io from a code comment on 18a53d0374 by Michael Crosby

TODO (estesp): until we have a more complete method for index push, we need to report id:368

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moby/vendor/github.com/containerd/containerd/client.go

Lines 337 to 344 in 94b8a11

	// TODO(estesp): until we have a more complete method for index push, we need to report
	// missing dependencies in an index/manifest list by sensing the "400 Bad Request"
	// as a marker for this problem
	if (manifestStack[i].MediaType == ocispec.MediaTypeImageIndex ||
	manifestStack[i].MediaType == images.MediaTypeDockerSchema2ManifestList) &&
	errors.Cause(err) != nil && strings.Contains(errors.Cause(err).Error(), "400 Bad Request") {
	return errors.Wrap(err, "manifest list/index references to blobs and/or manifests are missing in your target registry")
	}