anchor.diff:  #    echo "Pin: origin binaries.projectcalico.org" >> /etc/apt/preferences && \
   #    echo "Pin-Priority: 1001" >> /etc/apt/preferences
   
  -# Install dependencies shared with the master node.  If we can keep this
  -# in sync then we'll share an FS layer with the master to speed downloads.
   RUN apt-get update && \
       apt-get install -qy \
   #        calico-felix \
  +        bird \
  +        bird6 \
  +        build-essential \
           ipset \
           iptables \
           libffi-dev \
  
positive.code: # Install Powerstrip Calico Adapter dependencies.
  RUN pip install -r /adapter/requirements.txt
  
  RUN apt-get update && \
      apt-get install -qy \
          python-zmq \
          python-netaddr && \
      apt-get clean && \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  RUN curl https://dl.dropboxusercontent.com/u/4550074/calico-common_0.12.1_all.deb -o common.deb && dpkg -i common.deb && rm common.deb
  RUN curl https://dl.dropboxusercontent.com/u/4550074/calico-felix_0.12.1_all.deb -o felix.deb && dpkg -i felix.deb && rm felix.deb
  
negative.code: # Confd
  RUN curl -L https://github.com/kelseyhightower/confd/releases/download/v0.7.1/confd-0.7.1-linux-amd64 -o confd && \
      chmod +x confd
  
  # Powerstrip
  RUN curl -L https://github.com/ClusterHQ/powerstrip/archive/v0.0.1.tar.gz \
  