diff --git a/base-ubuntu/Dockerfile b/base-ubuntu/Dockerfile
index 7ed54aa..757b908 100644
--- a/base-ubuntu/Dockerfile
+++ b/base-ubuntu/Dockerfile
@@ -1,5 +1,5 @@
 ARG VARIANT="plucky"
-FROM ubuntu:${VARIANT}
+FROM ubuntu:${VARIANT} RUN userdel -r ubuntu
 
 ENV TERM=xterm-256color
 ENV DEBIAN_FRONTEND=noninteractive