rbenv + nodenv Docker Image
This image can be used as a base image for Dockerfiles that require both
Ruby and Node. It sets up rbenv and nodenv, along with their build plugins
and dependencies, but doesn't actually pre-install any version of Ruby or Node.
A Dockerfile building upon this image might look like this:
FROM noonat/rbenv-nodenv RUN rbenv install 2.2.0 && \ CONFIGURE_OPTS="--disable-install-doc" rbenv global 2.2.0 && \ gem install bundler && \ nodenv install 0.11.9 && \ nodenv global 0.11.9