diff --git a/Dockerfile b/Dockerfile
index 6734521..b98632c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,8 @@ ENV UID=99
 ENV GUID=100
 
 RUN deluser node
-RUN adduser -u $UID foundry
+
+RUN adduser -u $UID foundry foundry -G $GUID
 
 USER foundry