anchor.diff:  RUN DEBIAN_FRONTEND=noninteractive apt-get autoclean
   RUN DEBIAN_FRONTEND=noninteractive apt-get autoremove
   
  -# Serverspec
  +# Serverspec.
   RUN gem install bundler -v 1.6.3 2>/dev/null 
   RUN gem install serverspec rake 2>/dev/null
   
  -# PHPENV
  +# PHPENV.
   RUN git clone https://github.com/CHH/phpenv.git /tmp/phpenv
   RUN /bin/bash /tmp/phpenv/bin/phpenv-install.sh
   RUN scp /tmp/phpenv/extensions/* $HOME/.phpenv/libexec/
   
  +RUN echo 'export PATH="//.phpenv/bin:$PATH"' >> /$HOME/.bashrc
   RUN echo 'eval "$(phpenv init -)"' >> /$HOME/.bashrc
   ENV PATH /home/travis/.phpenv/shims:/home/travis/.phpenv/bin:$PATH
   
  
positive.code: 
  EXPOSE 80
  
  # Make start.sh executable
  RUN chmod 755 /start.sh
  
negative.code: RUN curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin -d detect_unicode=0
  RUN sudo ln -s /usr/local/bin/composer.phar /usr/local/bin/composer
  
  # Drush and dependencies.
  RUN /usr/local/bin/composer global require drush/drush:dev-master
  RUN /.composer/vendor/drush/drush/drush --version
  
  # Enable a2enmod rewrite.
  RUN a2enmod rewrite php5
  
  # Supervisord.
  