sudo apt-get update -y; \
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB; \
sudo apt-get install software-properties-common -y; \
sudo apt-add-repository -y ppa:rael-gc/rvm; \
sudo apt-get update -y; \
sudo apt-get install rvm -y; \
rvm install "ruby-2.4.3"; \
rvm use "ruby-2.4.3";