Unable to open TBrowser in docker container of CMSSW in Ubuntu

I encountered the error below when I tried to open TBrowser in CMSSW (release 5_3_32). Would really appreciate any suggestions to resolve this.

[17:55:26] cmsusr@rks01 ~/CMSSW_5_3_32/src $ root
No protocol specified
  *******************************************
  *                                         *
  *        W E L C O M E  to  R O O T       *
  *                                         *
  *   Version   5.32/00   2 December 2011   *
  *                                         *
  *  You are welcome to visit our Web site  *
  *          http://root.cern.ch            *
  *                                         *
  *******************************************

ROOT 5.32/00 (branches/v5-32-00-patches@42372, Jun 10 2014, 18:26:00 on linuxx8664gcc)

CINT/ROOT C/C++ Interpreter version 5.18.00, July 2, 2010
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] TBrowser t
No protocol specified
Error in <TGClient::TGClient>: can't open display ":0", switching to batch mode...
 In case you run from a remote ssh session, reconnect with ssh -Y

Hi! We have a set of instructions for opening a GUI for different host systems in Using Docker with the CMS open data – Docker pre-exercises
Let us know if that helps.

Best,

Kati
for the CMS open data team

Yes, indeed. Thank you.