change useProxies to true in dspace config

dockerfiles/Dockerfile.dspace

@@ -84,6 +84,7 @@ RUN make new_deploy
 # DEBUG: to be able to access tomcat manager through browser
 # COPY commul-customization/tomcat-users.xml /opt/tomcat8/conf/
 RUN perl -pi -e 's/#xmlui\.session\.ipcheck = true/xmlui.session.ipcheck = false/' /opt/lindat-dspace/installation/config/dspace.cfg
+RUN perl -pi -e 's/#useProxies = true/useProxies = true/' /opt/lindat-dspace/installation/config/dspace.cfg
 
 # set up handle server
 COPY commul-customization/hdl-setup.tmp /tmp/
@@ -98,4 +99,3 @@ RUN perl -pi -e 's#DSPACE_INSTALLATION_DIRECTORY=#DSPACE_INSTALLATION_DIRECTORY=
 COPY commul-customization/entrypoint.sh /usr/bin/entrypoint.sh
 RUN chmod u+x /usr/bin/entrypoint.sh
 ENTRYPOINT ["/usr/bin/entrypoint.sh"]
-