diff --git a/Dockerfile b/Dockerfile
index 779cfcb..86900d7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,8 @@ ENV USERhome=${dockeruser}
 ENV UID=12345
 ENV GID=23456
 
-RUN adduser \
+RUN addgroup -S docker  \
+    && adduser \
     --disabled-password \
     --gecos "" \
     --home "/home/${USERhome}" \