diff --git a/Dockerfile b/Dockerfile
index d2d0af1..185ee4e 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ ARG OVERLAY_ARCH="amd64"
 ENV PS1="$(whoami)@$(hostname):$(pwd)$ " \
 HOME="/root" \
 TERM="xterm"
+ENV test="test"
 
 # install packages
 RUN \