Fix UID and GID permission issue with Local Source Build

Fixes #338

Changes:
- Explicitly set UID and GID to 0 in "tar" header while writing archive, to prevent permission issue with local file having different UID and GID

Signed-off-by: Sayan Biswas <sayan-biswas@live.com>

Author: sayan-biswas

pkg/shp/streamer/util.go

@@ -28,6 +28,11 @@ func writeFileToTar(tw *tar.Writer, src, fpath string, stat fs.FileInfo) error {
 	}
 
 	header.Name = trimPrefix(src, fpath)
+
+	// Add explicit UID and GID
+	header.Uid = 0
+	header.Gid = 0
+
 	if err := tw.WriteHeader(header); err != nil {
 		return err
 	}