anchor.diff:  # Packages::dropbear
   RUN /command/core-package-install dropbear
   
  +# Packages::serf
  +RUN set -e; \
  +  /command/core-package-install unzip; \
  +  /command/core-slashpackage-install serf-0.6.3; \
  +  apt-get purge -y unzip
  +
   # Packages::haproxy
   RUN /command/core-package-install haproxy
   
  -# Packages::serf
  -RUN /command/core-slashpackage-install serf-0.6.3
  -
   # Packages::Lua
   RUN set -e; \
  -  /command/core-package-install luajit luarocks; \
  +  /command/core-package-install gcc make unzip luarocks luajit ; \
     luarocks install --server=http://rocks.moonscript.org luaposix; \
  -  ln -s /package/airstack/core/lua/airstack.lua /usr/local/lib/lua/5.1/airstack.lua
  +  ln -s /package/airstack/core/lua/airstack.lua /usr/local/lib/lua/5.1/airstack.lua; \
  +  apt-get purge -y binutils cpp cpp-4.9 gcc-4.9 libasan1 libatomic1 libcilkrts5 \
  +    libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libitm1 liblsan0 libmpc3 \
  +    libmpfr4 libquadmath0 libtsan0 libubsan0 make unzip luarocks
   
   # Packages::test
  -RUN luarocks install --server=http://rocks.moonscript.org busted
  +# RUN luarocks install --server=http://rocks.moonscript.org busted
   
   
   ################################################################################
  
positive.code: ################################################################################
  
  FROM debian:jessie
  
  
  ################################################################################
  # CONFIG
  ################################################################################
  
  USER root
  ENV HOME /root
  WORKDIR /root
  
negative.code: # This should appear as late in the Dockerfile as possible to make builds as
  # fast as possible.
  ################################################################################
  
  COPY core /package/airstack/core
  RUN ln -s /package/airstack/core/command/core-* /command/
  