apt install -y git ruby gcc ruby-dev rake make
gem install specific_install
gem specific_install https://github.com/ruby-numo/narray.git
gem specific_install https://github.com/genya0407/sake.git
See example
apt install -y git ruby gcc ruby-dev rake make
gem install specific_install
gem specific_install https://github.com/ruby-numo/narray.git
gem specific_install https://github.com/genya0407/sake.git
See example