Dockerfile in generic_test-0.1.9 vs Dockerfile in generic_test-0.1.10

@@ -2,10 +2,10 @@
 MAINTAINER Samuel Garratt
 
 # Required ruby gems
 RUN mkdir /test
 WORKDIR /test
-RUN gem install generic_test
+RUN gem install bundler generic_test
 
 # Google chrome
 ARG CHROME_VERSION="google-chrome-stable"
 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
   && echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list \
\ No newline at end of file