anchor.diff:  RUN \
       apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10 && \
       echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' >> /etc/apt/sources.list.d/mongodb.list && \
  -    apt-get update && \
  -    apt-get install -q -y mongodb-org && \
  +    apt-get update && apt-get install -y mongodb-org && \
       rm -rf /var/lib/apt/lists/*
   
   VOLUME ["/data/db"]
  
positive.code: ########## Zend Server installation - END ##########
  
  ########## Varnish installation - START ##########
  RUN \
      apt-get install -y apt-transport-https curl && \
      curl https://repo.varnish-cache.org/ubuntu/GPG-key.txt | apt-key add - && \
      echo "deb https://repo.varnish-cache.org/ubuntu/ trusty varnish-3.0" >> /etc/apt/sources.list.d/varnish-cache.list && \
      apt-get update && \
      apt-get install -q -y varnish
  
  EXPOSE 80
  ########## Varnish installation - END ##########
  
negative.code: RUN \
      apt-key adv --keyserver keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A && \
      echo "deb http://repo.percona.com/apt `lsb_release -cs` main" >> /etc/apt/sources.list.d/percona.list && \
      apt-get update && apt-get install -y percona-server-server-5.6 && \
      rm -rf /var/lib/apt/lists/* && \
      sed -i 's/^\(bind-address\s.*\)/# \1/' /etc/mysql/my.cnf && \
      sed -i 's/^\(log_error\s.*\)/# \1/' /etc/mysql/my.cnf && \
  