try makeing starting dir not root for initial run

image_optim.sh

@@ -83,7 +83,7 @@ jpeg_remove_comment_and_exiv()
 if [ "`git log -1 --pretty="%B" | awk '{print $1}'| sed '$d'`" == "image_optim" ] ; then
 	filelist=`git log -1 --stat --pretty="%b" | sed '$d' | awk '{print $1}'`
 else
-	filelist=`git ls-files  | grep "\.png$"`
+	filelist=`git ls-files ./ | grep "\.png$"`
 fi
 png_optimize_all()
 {