diff --git a/Dockerfile b/Dockerfile
index 7233642..ee20f10 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM nginx
 RUN echo $UID
 
 RUN mkdir -p /var/www/dir2cast
-RUN chgrp -R www-data /var/www/dir2cast
+RUN chown -R www-data:www-data /var/www/dir2cast
 
 COPY apps/dir2cast/dir2cast.php /var/www/dir2cast
 COPY apps/dir2cast/getID3 /var/www/dir2cast/getID3