ENV GEM_HOME /usr/local/rvm/gems/ruby-2.0.0-p247
ENV GEM_PATH /usr/local/rvm/gems/ruby-2.0.0-p247:/usr/local/rvm/gems/ruby-2.0.0-p247@global
ENV PATH /usr/local/rvm/gems/ruby-2.0.0-p247/bin:/usr/local/rvm/gems/ruby-2.0.0-p247@global/bin:/usr/local/rvm/rubies/ruby-2.0.0-p247/bin:/usr/local/rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+
+RUN gem update --system
+