FROM ubuntu:latest RUN apt-get update -y RUN apt-get install -y wget make git RUN wget --no-check-certificate -O ruby-install-0.4.3.tar.gz https://github.com/postmodern/ruby-install/archive/v0.4.3.tar.gz RUN tar -xzvf ruby-install-0.4.3.tar.gz RUN cd ruby-install-0.4.3 && make install RUN ruby-install ruby 1.9.3 RUN ruby-install ruby 2.1.1 RUN ruby-install ruby 2.1.2 ADD . /pry WORKDIR /pry