anchor.diff:      wget -O /tmp/deb.deb https://www.dropbox.com/download?dl=packages/ubuntu/dropbox_1.6.0_amd64.deb && \
       dpkg -i /tmp/deb.deb && \
       rm /tmp/deb.deb
  +    
  +# PHP based on defaults from
  +#   http://docs.travis-ci.com/user/ci-environment/#Extensions
  +#   https://devcenter.heroku.com/articles/php-support
  +# Xdebug, most recent PECL version
  +RUN apt-get install -y php5 php5-cli php5-fpm \
  +        php5-curl php5-gd php5-json php5-pgsql php5-readline php5-sqlite \
  +        php5-tidy php5-xmlrpc php5-xsl php5-intl php5-mcrypt php5-mysqlnd \
  +        php-pear \
  +    && php5enmod c9 \
  +    && apt-get install -y php5-dev \
  +        && pecl install xdebug \
  +        && php5enmod xdebug
  +    && apt-get install -y apache2 apache2-doc phpmyadmin \
  +    && cd /etc/php5/mods-available && ls *.ini | sed 's/\.ini$//' | xargs php5enmod \
  +        && curl -sS https://getcomposer.org/installer | php \
  +        && mv composer.phar /usr/bin/composer
   
   # Python
   RUN apt-get install -y python3 python3-dev python3-setuptools ipython3 \
  
positive.code:     sed -Ei 's/(.*)secure_path.*/\1!secure_path/' /etc/sudoers && \
      touch /etc/init.d/systemd-logind && \
      cp /bin/true /bin/sync
      
  # PHP runtime, based on defaults from
  #   http://docs.travis-ci.com/user/ci-environment/#Extensions
  #   https://devcenter.heroku.com/articles/php-support
  # PHP Xdebug, most recent PECL version
  ADD ./files/etc /etc
  RUN apt-get update \
      && apt-get install -y php5 php5-cli \
          php5-curl php5-gd php5-json php5-pgsql php5-readline php5-sqlite \
          php5-tidy php5-xmlrpc php5-xsl php5-intl php5-mcrypt php5-mysqlnd \
      && php5enmod c9
  RUN apt-get install -y php5-dev \
      && pecl install xdebug \
      && php5enmod xdebug
  
  # re-enable service startup. This line must come after all apt-get installs
  RUN rm -f /usr/sbin/policy-rc.d
  
negative.code: ENV DEBIAN_FRONTEND noninteractive
  
  # increment version to force flushing the cache
  RUN echo "Version 1.8"
  
  ADD ./files/etc /etc
  
  RUN apt-get update --fix-missing && apt-get -y dist-upgrade
  RUN apt-get install -y bash console-setup sudo wget curl git python software-properties-common man-db && \
      echo "install console-setup" && \
      echo "console-setup   console-setup/codeset47 select  # Latin1 and Latin5 - western Europe and Turkic languages" | debconf-set-selections && \
      echo "console-setup   console-setup/fontface47        select  Fixed" | debconf-set-selections && \
  