Initial commit with the basics of the Dockerfile

Dockerfile

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+FROM ubuntu:trusty
+
+# Grab the bare necessities for installing RVM and some Rubies
+RUN apt-get update && apt-get install -yq git build-essential curl gnupg
+# Accept mpapis' key so we can safely install RVM
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+# Grab the latest stable version of RVM
+RUN curl -sSL https://get.rvm.io | bash -s stable
+
+COPY rvmrc /root/.rvmrc

README.adoc

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+= Docker RVM for CI
+
+This repository contains some `Dockerfile` code for building containers which
+come pre-baked with RVM for builds and tests in
+link:https://jenkins.io[Jenkins].

rvmrc

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+rvm_install_on_use_flag=1