scenarios/rails41.dockerfile in pry-rails-0.3.8 vs scenarios/rails41.dockerfile in pry-rails-0.3.9

@@ -1,5 +1,5 @@
 FROM ruby:2.3
 RUN mkdir -p /scenario
 WORKDIR /scenario
 ENV LANG=C.UTF-8
-CMD (bundle check || bundle install) && bundle exec rake
+CMD (bundle check || (gem install bundler && bundle install)) && bundle exec rake