Merge pull request #1173 from dataquest-dev/clarify-explicit-UID

Update comment for 'dspace' user creation in Dockerfile

Author: pStefanec

Dockerfile

@@ -81,7 +81,8 @@ 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
 
-# We create a 'dspace' user to run DSpace instead of running as root
+# We create a 'dspace' user to run DSpace instead of running as root. An explicit UID is required 
+# because Kubernetes deployment accepts only numeric user IDs when specifying the container user.
 RUN useradd -u 1100 -m -s /bin/bash dspace \
     && chown -Rv dspace: /dspace /usr/local/tomcat