anchor.diff:  ENV CMAKE_ROOT /usr/local/share/cmake-$CMAKE_VER_MAJ
   
   # node https://nodejs.org/en/
  -ENV NODE_VER 8.11.3
  +ENV NODE_VER 8.12.0
   
   RUN wget https://github.com/nodejs/node/archive/v$NODE_VER.tar.gz \
   	&& tar xf v$NODE_VER.tar.gz && cd node-$NODE_VER \
  
positive.code: 	&& rm -rf LibreOffice_${LIBREOFFICE_VER}${LIBREOFFICE_VER_MINOR}_Linux_x86-64_rpm
  
  # Shiny - https://www.rstudio.com/products/shiny/download-server/
  ENV SHINY_VER 1.5.7.907
  
  RUN R -e 'install.packages("shiny")' \
  	&& wget https://download3.rstudio.org/centos6.3/x86_64/shiny-server-$SHINY_VER-rh6-x86_64.rpm \
  	&& echo "3f8f53d87767cc5949d3b83206c628d0  shiny-server-$SHINY_VER-rh6-x86_64.rpm" > SHINYSERVERMD5 \
  	&& RESULT=$(md5sum -c SHINYSERVERMD5) \
  	&& echo ${RESULT} > ~/check-shiny-server-md5.txt \
  	&& yum -y install --nogpgcheck shiny-server-$SHINY_VER-rh6-x86_64.rpm \
  
negative.code: # llvm needs CMake 2.8.12.2 or higher
  # https://cmake.org/download/
  ENV CMAKE_VER_MAJ 3.12
  ENV CMAKE_VER_MIN .2
  ENV CMAKE_VER $CMAKE_VER_MAJ$CMAKE_VER_MIN
  
  RUN wget https://cmake.org/files/v$CMAKE_VER_MAJ/cmake-$CMAKE_VER.tar.gz \
  