diff --git a/Dockerfile b/Dockerfile
index 24acf0a..a3ea29c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update && \
     apt-get install -y sudo python3 python3-pip && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* && \
+    userdel -r node && \
     useradd -u 1000 -ms /bin/bash tt && \
     useradd -u 1001 -ms /bin/bash student && \
     echo "student ALL=(tt) NOPASSWD:/usr/local/bin/joj3" > /etc/sudoers.d/joj