diff --git a/Dockerfile b/Dockerfile
index 4a8b528..e9b9108 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -42,8 +42,7 @@ ARG EXCLUDE_VARS="HOME PASSWORD RSTUDIO_VERSION BATCH_USER_CREATION"
 ARG R_HOME="/usr/local"
 # The 0*_ scripts cannot be used anymore
 # ADD 01_set_env.sh /etc/cont-init.d/01_set_env
-RUN for file in /var/run/s6/container_environment/* ; do sed -i "/^${file##*/}=/d" ${R_HOME}/etc/Renviron.site ; regex="(^| )${file##*/}($| )" ;
-  if [ ! $exclude_vars =~ $regex ] ; then echo "${file##*/}=$(cat $file)" >> ${R_HOME}/etc/Renviron.site ; fi ; done
+RUN for file in /var/run/s6/container_environment/* ; do sed -i "/^${file##*/}=/d" ${R_HOME}/etc/Renviron.site ; regex="(^| )${file##*/}($| )" ; if [ ! $exclude_vars =~ $regex ] ; then echo "${file##*/}=$(cat $file)" >> ${R_HOME}/etc/Renviron.site ; fi ; done
 
 # ADD 02_userconf.sh /etc/cont-init.d/02_userconf
 RUN mv -f /etc/rstudio/disable_auth_rserver.conf /etc/rstudio/rserver.conf