anchor.diff:  
   RUN source /etc/profile && \
       mkdir -p /usr/share/doc/R-3.5.1/html/ && \
  +    mkdir -p /tmp/R/ && \
       echo "# Install script IRkernel" > rkernel_install.R && \
  -    echo "install.packages('git2r', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \    
  -    echo "install.packages('usethis', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \        
  -    echo "install.packages('essentials', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('pbdzmq', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('repr', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('irdisplay', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('evaluate', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \                
  -    echo "install.packages('crayon', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('uuid', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('digest', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  -    echo "install.packages('memoise', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \                
  -    echo "install.packages('devtools', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \ 
  +    echo "install.packages('pbdZMQ', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('repr', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('IRdisplay', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('evaluate', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \                
  +    echo "install.packages('crayon', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('uuid', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('digest', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
  +    echo "install.packages('memoise', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \                
  +    echo "install.packages('git2r', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \    
  +    echo "install.packages('usethis', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \        
  +    echo "install.packages('devtools', lib='/tmp/R/', repos='http://cloud.r-project.org/')" >> rkernel_install.R && \
       echo "devtools::install_github('IRkernel/IRkernel')" >> rkernel_install.R && \    
  -    Rscript rkernel_install.R
  +    /tmp/anaconda3/bin/Rscript rkernel_install.R     
   
   CMD ["/tmp/anaconda3/bin/jupyterhub --help"]
positive.code: RUN echo "Install OS dependencies" && \
      source /etc/profile && \
      yum update -y && yum groupinstall -y "Development tools" && yum install epel-release -y && \
      yum install -y cairo-devel libjpeg-turbo-devel openssl-devel libpng-devel libxml2-devel libcurl-devel libssh2-devel libgit2-devel nodejs openssl nano htop git wget && \
      npm install -g configurable-http-proxy && \
      yum clean all && \
      rm -rf /var/cache/yum    
  
negative.code:     echo >> /etc/jupyterhub/jupyterhub_config.py && \
      echo "c.Spawner.cmd = ['/tmp/anaconda3/bin/jupyter-labhub']" >> /etc/jupyterhub/jupyterhub_config.py && \
      echo >> /etc/jupyterhub/jupyterhub_config.py && \
      echo '{"argv": ["/tmp/anaconda3/bin/R", "--slave", "-e", "IRkernel::main()", "--args", "{connection_file}"], "display_name":"R", "language":"R"}' > /tmp/anaconda3/share/jupyter/kernels/ir/kernel.json
  
  RUN source /etc/profile && \
      echo "Install bash kernel" && \
  