diff --git a/ruby/2.1.8/Dockerfile b/ruby/2.1.8/Dockerfile
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+++ b/ruby/2.1.8/Dockerfile
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+FROM debian:jessie
+
+MAINTAINER Ric Lister <rlister@gmail.com>
+
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive \
+    apt-get install -yq \
+    build-essential \
+    zlib1g-dev \
+    libssl-dev \
+    libreadline6-dev \
+    libyaml-dev
+
+ENV RUBY_MAJOR_VERSION 2.1
+ENV RUBY_MINOR_VERSION 2.1.8
+
+ADD http://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR_VERSION}/ruby-${RUBY_MINOR_VERSION}.tar.gz /tmp/
+
+RUN tar -zxf /tmp/ruby-${RUBY_MINOR_VERSION}.tar.gz && \
+    (cd ruby-${RUBY_MINOR_VERSION} && ./configure --disable-install-doc && make install) && \
+    rm -rf /tmp/ruby-${RUBY_MINOR_VERSION}.tar.gz && rm -rf ruby-${RUBY_MINOR_VERSION}
+
+RUN gem install bundler --no-rdoc --no-ri
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