Method updateEmbeddedDockerReference

copy/single.go:355–373

updateEmbeddedDockerReference handles the Docker reference embedded in Docker schema1 manifests.

()

// updateEmbeddedDockerReference handles the Docker reference embedded in Docker schema1 manifests.
func (ic *imageCopier) updateEmbeddedDockerReference() error {
	if ic.c.dest.IgnoresEmbeddedDockerReference() {
		return nil // Destination would prefer us not to update the embedded reference.
	}
	destRef := ic.c.dest.Reference().DockerReference()
	if destRef == nil {
		return nil // Destination does not care about Docker references
	}
	if !ic.src.EmbeddedDockerReferenceConflicts(destRef) {
		return nil // No reference embedded in the manifest, or it matches destRef already.
	}

	if ic.cannotModifyManifestReason != "" {
		return fmt.Errorf("Copying a schema1 image with an embedded Docker reference to %s (Docker reference %s) would change the manifest, which we cannot do: %q",
			transports.ImageName(ic.c.dest.Reference()), destRef.String(), ic.cannotModifyManifestReason)
	}
	ic.manifestUpdates.EmbeddedDockerReference = destRef
	return nil
}

func (ic *imageCopier) noPendingManifestUpdates() bool {
	return reflect.DeepEqual(*ic.manifestUpdates, types.ManifestUpdateOptions{InformationOnly: ic.manifestUpdates.InformationOnly})