Merge pull request #1157 from dataquest-dev/palo-docker-user-fix

more descriptive comment added

Author: pStefanec

Dockerfile

@@ -81,6 +81,7 @@ RUN ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/server
 WORKDIR /usr/local/tomcat/bin
 RUN chmod u+x redebug.sh undebug.sh custom_run.sh
 
+# For security reason (requirement on some cloud platforms) we want run dspace as non-root user.
 RUN chown -R ubuntu:ubuntu /dspace /usr/local/tomcat
 
 USER ubuntu