diff --git a/Dockerfile b/Dockerfile
index b54a994..c24a9f4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,16 +3,16 @@ FROM debian:bullseye-slim
 RUN apt-get update \
 &&  apt-get install -y samba
 
-ARG USER=share
+ARG SMBUSER=share
 ARG SMBPW=do_not_use_insecure
 
-RUN groupadd -g 5858 "$USER" \
-&&  useradd -u 5858 -g 5858 "$USER" \
-&&  (echo "$SMBPW";echo "$SMBPW") | smbpasswd -sa "$USER"
+RUN groupadd -g 5858 "$SMBUSER" \
+&&  useradd -u 5858 -g 5858 "$SMBUSER" \
+&&  (echo "$SMBPW";echo "$SMBPW") | smbpasswd -sa "$SMBUSER"
 
 EXPOSE 137/udp 138/udp 139 445
 
-RUN mkdir /share && chown share:share /share && chmod 0777 /share
+RUN mkdir /share && chown $SMBUSER:$SMBUSER /share && chmod 0777 /share
 
 VOLUME /share