Create a new slice in Schema1.UpdateLayerInfos
Create a new slice in Schema1.UpdateLayerInfos

Image.UpdatedImage is supposed to create a new instance which does not modify
the original, so Manifest.UpdateLayerInfos should not modify the original either.

Signed-off-by: Miloslav Trmač <9c008e38982a5397deb855345fb164f0558459ae@redhat.com>

containers/image,containers/image