diff --git a/Dockerfile b/Dockerfile
index 9c24a7c4c62bc3598e6367187273a692a7bd0e68..de85a59780384e552259e14bd43e3f6543b8a4f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,7 +43,8 @@ RUN useradd -m -s /bin/bash -N -u $NB_UID $NB_USER && \
     chown $NB_USER / && \
     chpasswd $NB_USER:ar-noc
 RUN usermod -aG docker ${NB_USER}
-.
+
+
 USER $NB_USER
 
 ARG python_version=3.6