anchor.diff:  RUN source /opt/echo-api/etc/scl_enable \
     && gem install -N bundler \
     && gem env \
  -  && bundle config --global silence_root_warning 1 
  +  && bundle config --global silence_root_warning 1
   
   ENV BASH_ENV=/opt/echo-api/etc/scl_enable \
       ENV=/opt/echo-api/etc/scl_enable \
  
positive.code:   && yum install -y centos-release-scl \
    && yum install -y \
      gcc \
      make \ 
      openssl-devel \
      ${RUBY_VERSION} \
      ${RUBY_VERSION}-ruby-devel \
  
negative.code:   BUNDLE_WITHOUT=development:test
  
  RUN source /opt/echo-api/etc/scl_enable \
    && bundle install --deployment
  
  EXPOSE 9292
  
  