-RUN /bin/sed -ri 's/^baseurl: .*$/baseurl: /' /usr/src/arvados/doc/_config.yml ;\
- cd /usr/src/arvados/doc; LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" jekyll build
+RUN /usr/local/rvm/bin/rvm-exec default bundle install --gemfile=/usr/src/arvados/doc/Gemfile && \
+ /bin/sed -ri 's/^baseurl: .*$/baseurl: /' /usr/src/arvados/doc/_config.yml && \
+ cd /usr/src/arvados/doc && \
+ LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" /usr/local/rvm/bin/rvm-exec default bundle exec rake