fix podman load oci-archive use name

Signed-off-by: zhangguanzhang <[email protected]>

oci/layout/oci_transport.go

@@ -202,6 +202,12 @@ func (ref ociReference) getManifestDescriptor() (imgspecv1.Descriptor, error) {
 			if !ok {
 				continue
 			}
+			// length is 1, could use the name to override it in podman
+			if len(index.Manifests) == 1 {
+				index.Manifests[0].Annotations[imgspecv1.AnnotationRefName] = ref.image
+				d = &index.Manifests[0]
+				break
+			}
 			if refName == ref.image {
 				d = &md
 				break