First release with tests

tests/Dockerfile

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+FROM ruby:2.6.3
+RUN apt-get update -qq && \
+  apt-get install -y -qq \
+    jq \
+    make \
+    gcc \
+    bash
+    
+RUN echo 'gem: --no-rdoc --no-ri' > /root/.gemrc
+RUN gem install bundler
+RUN gem update --system
+RUN mkdir -p /gemfile
+
+#Cache gems so they don't install on every code change
+WORKDIR /gemfile
+COPY Gemfile Gemfile
+COPY Gemfile.lock Gemfile.lock
+RUN bundle install --jobs 4