provision latest RubyGems

Author: fxn

bootstrap.sh

@@ -23,6 +23,9 @@ install Ruby ruby2.4 ruby2.4-dev
 update-alternatives --set ruby /usr/bin/ruby2.4 >/dev/null 2>&1
 update-alternatives --set gem /usr/bin/gem2.4 >/dev/null 2>&1
 
+echo installing current RubyGems
+gem update --system -N >/dev/null 2>&1
+
 echo installing Bundler
 gem install bundler -N >/dev/null 2>&1