anchor.diff:  ENV cachet_ver master
   
   ENV PG_MAJOR 9.5
  +ENV NGINX_VERSION 1.10.1-1~jessie
   
   RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8
  +RUN apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62
   
  +RUN echo "deb http://nginx.org/packages/debian/ jessie nginx" >> /etc/apt/sources.list 
   RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main' $PG_MAJOR > /etc/apt/sources.list.d/pgdg.list
   
   # Using debian packages instead of compiling from scratch
  
positive.code: 
  COPY conf/php-fpm-pool.conf /etc/php5/fpm/pool.d/www.conf
  COPY conf/supervisord.conf /etc/supervisor/supervisord.conf
  COPY conf/nginx-site.conf /etc/nginx/sites-available/default
  
  RUN echo "daemon off;" >> /etc/nginx/nginx.conf
  RUN mkdir -p /var/www/html && \
  
negative.code:     ca-certificates \
      postgresql-client-$PG_MAJOR \
      mysql-client \
      nginx=${NGINX_VERSION} \
      php5-fpm php5-curl \
      php5-readline php5-mcrypt sudo \
      php5-mysql php5-apcu php5-cli \
  