anchor.diff:  
   ENV HOME /home/ops
   ENV ENAML /opt/enaml
  -ENV GOPATH $HOME/go
  -ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$HOME/bin:/usr/local/go/bin:$GOPATH/bin
  +ENV GOPATH /opt/go
  +ENV GOBIN /opt/go/bin
  +ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$HOME/bin:/usr/local/go/bin:$GOBIN
   
   ADD update_enaml.sh /usr/local/bin
   
  
positive.code: 
  RUN go get -u github.com/concourse/fly
  
  RUN cd /usr/local/bin && wget -q -O pivnet \
      "$(curl -s https://api.github.com/repos/pivotal-cf/go-pivnet/releases/latest \
      |jq --raw-output '.assets[] | .browser_download_url' | grep linux | grep -v zip)" && chmod +x pivnet
  
negative.code: RUN baseURL=$(wget -q -O- https://github.com/vmware/photon-controller/releases/ | grep -m 1 photon-linux | perl -ne 'print map("$_\n", m/href=\".*?\"/g)' |  tr -d '"' | awk -F "href=" '{print$2}') && wget https://github.com$baseURL -O /usr/local/bin/photon
  RUN chmod 755 /usr/local/bin/photon
  
  RUN chown -R ops: /opt
  
  RUN apt-get clean && apt-get -y autoremove
  RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  