- /usr/local/rvm/bin/rvm install 2.3 && \
- /usr/local/rvm/bin/rvm alias create default ruby-2.3 && \
- /usr/local/rvm/bin/rvm-exec default gem install bundler && \
+ /usr/local/rvm/bin/rvm install 2.5 && \
+ /usr/local/rvm/bin/rvm alias create default ruby-2.5 && \