anchor.diff:  
   FROM sdk as calf
   
  -RUN opam pin add charrua-client.dev https://github.com/samoht/charrua-client.git#with-cdhcpc -n
  -RUN opam pin add mirage-net-fd 0.2.0 -n
  -RUN opam list
  -RUN opam depext -iy mirage-net-fd charrua-client lwt mirage-types-lwt cmdliner
  -
  -RUN opam list
  -
   COPY ./dhcp-client-calf/unikernel.ml /src/dhcp-client-calf/
   COPY ./dhcp-client-calf/jbuild /src/dhcp-client-calf/
   RUN sudo chown opam -R /src
   
  -RUN opam config exec -- jbuilder build dhcp-client-calf/unikernel.exe
  +RUN opam config exec -- jbuilder build --dev dhcp-client-calf/unikernel.exe
   RUN sudo mkdir -p /out/
   RUN sudo cp /src/_build/default/dhcp-client-calf/unikernel.exe /out/dhcp-client-calf
   
  
positive.code: RUN opam pin add -n capnp.dev 'https://github.com/talex5/capnp-ocaml.git#interfaces'
  RUN opam pin add -n capnp-rpc.dev 'https://github.com/mirage/capnp-rpc.git'
  RUN opam pin add -n capnp-rpc-lwt.dev 'https://github.com/mirage/capnp-rpc.git'
  
  COPY sdk.opam /src
  RUN sudo chown opam -R /src
  
negative.code: 
  FROM sdk as priv
  
  COPY ./dhcp-client /src/dhcp-client
  RUN sudo chown opam -R /src
  
  RUN opam config exec -- jbuilder build --dev dhcp-client/main.exe
  RUN sudo mkdir -p /out
  RUN sudo cp /src/_build/default/dhcp-client/main.exe /out/dhcp-client
  
  