Merge pull request #8813 from jlhawn/aufs_exclude_on_tar_layer

Exclude `.wh..wh.*` AUFS metadata on layer export
Upstream-commit: 6718791ea28be1bd6bce49cd9f49844c24f9dcf7
Component: engine

components/engine/daemon/graphdriver/aufs/aufs.go

@@ -300,6 +300,7 @@ func (a *Driver) Diff(id, parent string) (archive.Archive, error) {
 	// AUFS doesn't need the parent layer to produce a diff.
 	return archive.TarWithOptions(path.Join(a.rootPath(), "diff", id), &archive.TarOptions{
 		Compression: archive.Uncompressed,
+		Excludes:    []string{".wh..wh.*"},
 	})
 }