anchor.diff:  WORKDIR $HOME
   
   COPY ./pub-cache.tgz ./pub-cache.tgz
  -RUN tar xzf pub-cache.tgz
  +COPY ./rialto_viewer.tgz ./rialto_viewer.tgz
   
  -RUN rm -rf $HOME/tuple
  -#RUN git clone https://github.com/radiantbluetechnologies/tuple.git tuple
  -COPY ./rialto_viewer.tgz ./rialto_viewer.tgz
  -RUN tar xzf rialto_viewer.tgz
  -
  -# copy built Cesium into the Rialto project
  -RUN cp -r cesium/Build tuple/rialto_viewer/web/cesium-build
  +RUN tar xzf pub-cache.tgz && \
  +    rm -f pub-cache.tgz && \
  +    tar xzf rialto_viewer.tgz && \
  +    rm -fr $HOME/tuple/rialto_viewer/web/cesium-build && \
  +    cp -r cesium/Build tuple/rialto_viewer/web/cesium-build && \
  +    rm -f rialto_viewer.tgz && \
  +    rm -fr $HOME/cesium
   
   WORKDIR $HOME/tuple/rialto_viewer
   RUN /usr/lib/dart/bin/pub build
  
positive.code: #
  #########################################################
  
  RUN sh -c 'curl https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -'
  RUN sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
  RUN sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_unstable.list > /etc/apt/sources.list.d/dart_unstable.list'
  
  RUN apt-get -y update
  RUN apt-get -y upgrade
  
  RUN apt-get -y install dart
  
  
  #########################################################
  
negative.code: #
  #########################################################
  
  RUN git clone https://github.com/mpgerlek/cesium.git cesium && \
      cd cesium && \
      git checkout 1.5-mpg && \
      ant combine
  
  
  #########################################################
  