anchor.diff:      php5-memcache \
       php5-xdebug \
       # Cleanup
  -    && DEBIAN_FRONTEND=noninteractive apt-get clean \
  -    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  +    && DEBIAN_FRONTEND=noninteractive apt-get clean && \
  +    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
   
   # Composer
   RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
  
positive.code: ENV LC_ALL C.UTF-8
  
  # Add Dotdeb PHP5.6 repo
  RUN curl -s http://www.dotdeb.org/dotdeb.gpg | apt-key add - \
      && echo 'deb http://packages.dotdeb.org wheezy-php56 all' > /etc/apt/sources.list.d/dotdeb.list \
      && echo 'deb-src http://packages.dotdeb.org wheezy-php56 all' >> /etc/apt/sources.list.d/dotdeb.list
  
  # PHP packages
  RUN \
      DEBIAN_FRONTEND=noninteractive apt-get update \
      && DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes --no-install-recommends install \
      php5-common \
      php5-cli \
      php-pear \
  
negative.code: RUN sed -i 's/main/main contrib non-free/' /etc/apt/sources.list
  
  # Basic packages
  RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
      DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes --no-install-recommends install \
      curl \
      wget \
      zip \
  