anchor.diff:  ################################################################################
   
   # Add commands required for building images.
  -ADD core/build /package/airstack/build
  +COPY core/build /package/airstack/build
   RUN set -e; \
     mkdir -v /command; \
     ln -sv /package/airstack/build/core-* /command/
  
positive.code: # TESTS
  ################################################################################
  
  ADD test /package/airstack/test
  
negative.code: # Add Airstack core commands
  # 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/
  
  #
  # RUNLEVEL 1
  