Created a Dockerfile to containerize solr explain

docker/Dockerfile

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+FROM ubuntu
+
+MAINTAINER tcnksm "https://github.com/tcnksm"
+
+# Install packages for building ruby
+RUN apt-get update
+RUN apt-get install -y --force-yes build-essential curl git
+RUN apt-get install -y --force-yes zlib1g-dev libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt-dev
+RUN apt-get clean
+
+# Install rbenv and ruby-build
+RUN git clone https://github.com/sstephenson/rbenv.git /root/.rbenv
+RUN git clone https://github.com/sstephenson/ruby-build.git /root/.rbenv/plugins/ruby-build
+RUN /root/.rbenv/plugins/ruby-build/install.sh
+ENV PATH /root/.rbenv/bin:$PATH
+RUN echo 'eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh # or /etc/profile
+RUN echo 'eval "$(rbenv init -)"' >> .bashrc
+
+# Install ruby version 1.9.3-p545
+ENV CONFIGURE_OPTS --disable-install-doc
+RUN xargs -L 1 rbenv install 1.9.3-p545
+
+# Install Bundler for ruby 
+RUN echo 'gem: --no-rdoc --no-ri' >> /.gemrc
+RUN bash -l -c 'rbenv global 1.9.3-p545'
+RUN bash -l -c 'gem install bundler'
+
+# Update gems
+RUN apt-get install -y libpq-dev
+RUN apt-get install -y postgresql postgresql-contrib
+RUN apt-get install -y sqlite3 libsqlite3-dev
+RUN apt-get install -y rubygems-integration
+RUN bash -l -c 'gem install bundler'
+
+WORKDIR /home/
+RUN git clone https://github.com/solrpl/explain.git
+WORKDIR /home/explain/explainapp/
+
+RUN bash -l -c 'bundle update rails'
+RUN bash -l -c 'bundle install'
+RUN bash -l -c 'bundle'
+RUN bash -l -c 'rake db:migrate'
+EXPOSE 3000
+
+CMD bash -l -c 'bundle exec rails server'

docker/README.md

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+## Instructions
+
+1. Create the image:
+`docker build .`
+
+   When completed, you should see a message similar to:
+`Successfully built f7a7b798050c`
+
+2. To start the container and run the solr explain server: `docker run -p 3000:3000 f7a7b798050c`
+
+NOTE: This image id will be different on your machine
+