anchor.diff:  # Update package cache with new PPA, install language and modules
   RUN apt-get update && \
       apt-get -yq install \
  -        php5=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  -        php5-dev=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  -        php5-gd=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  -        php5-mysqlnd=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  -        php5-intl=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  -        php5-curl=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  +        php5=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-dev=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-gd=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-mysqlnd=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-intl=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-curl=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
           php5-gearman=1.1.2-1+deb.sury.org~trusty+2 \
           php5-memcache=3.0.8-5+deb.sury.org~trusty+1 \
  -        php5-mcrypt=5.6.6+dfsg-1+deb.sury.org~trusty+1 \
  +        php5-mcrypt=5.6.7+dfsg-1+deb.sury.org~trusty+1 \
           php5-json=1.3.6-1+deb.sury.org~trusty+2 \
           php5-xdebug=2.2.5-1+deb.sury.org~trusty+1 && \
       php5dismod xdebug
  
positive.code: # Install pre-reqs, security updates
  RUN apt-get update && \
      apt-get -yq install \
          openssl=1.0.1f-1ubuntu2.8 \
          ca-certificates=20141019ubuntu0.14.04.1 \
          wget
  
  
negative.code: # http://article.gmane.org/gmane.linux.kernel/1853266
  RUN add-apt-repository ppa:git-core/ppa -y && \
      apt-get update -yq && \
      apt-get install -yq git=1:2.3.4-0ppa2~ubuntu14.04.1
  
  # singularity_runner
  RUN apt-get install build-essential ruby1.9.1-dev -y && \
  