anchor.diff:  FROM percona:5.6
   
  -ENV CONTAINERPILOT_VER 2.4.2
  +ENV CONTAINERPILOT_VER 2.6.0
   ENV CONTAINERPILOT file:///etc/containerpilot.json
   
   # By keeping a lot of discrete steps in a single RUN we can clean up after
  
positive.code:     # \
      # Add ContainerPilot and set its configuration file path \
      # \
      && export CONTAINERPILOT_CHECKSUM=61712373d52a5cfc5ae0d694477129604a52827c \
      && curl -Lvo /tmp/containerpilot.tar.gz "https://github.com/joyent/containerpilot/releases/download/${CONTAINERPILOT_VER}/containerpilot-${CONTAINERPILOT_VER}.tar.gz" \
      && echo "${CONTAINERPILOT_CHECKSUM}  /tmp/containerpilot.tar.gz" | sha1sum -c \
      && tar zxf /tmp/containerpilot.tar.gz -C /usr/local/bin \
  
negative.code:     # \
      # Add Consul from https://releases.hashicorp.com/consul \
      # \
      && export CHECKSUM=5dbfc555352bded8a39c7a8bf28b5d7cf47dec493bc0496e21603c84dfe41b4b \
      && curl -Lvo /tmp/consul.zip https://releases.hashicorp.com/consul/0.7.1/consul_0.7.1_linux_amd64.zip \
      && echo "${CHECKSUM}  /tmp/consul.zip" | sha256sum -c \
      && unzip /tmp/consul.zip -d /usr/local/bin \
      && rm /tmp/consul.zip \
  