nextdude/ruby-node-yarn repository overview

This repo is based on the starefosen/ruby-node images created by Hans Kristian Flaatten [email protected]⁠. I just dried up the dockerfiles a bit so I could produce an up-to-date version of the image with Ruby 2.6, Node 11.7 and Yarn 1.13. The github repo for this is at github.com/nextdude/docker-ruby-node-yarn.