anchor.diff:  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 && \
  +    yum install -y libunwind 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    
  
positive.code:     curl -O https://repo.continuum.io/archive/$anaconda_installer
  
  RUN echo "export PATH=\"/tmp/anaconda3/bin:$PATH\"" >> /etc/profile && \
      echo "alias R='/usr/bin/R'" >> /etc/profile && \
      echo "alias Rscript='/usr/bin/Rscript'" >> /etc/profile && \
      echo "alias pip='/tmp/anaconda3/bin/pip'" >> /etc/profile && \        
      echo "alias python='/tmp/anaconda3/bin/python'" >> /etc/profile && \            
      echo "alias conda='/tmp/anaconda3/bin/conda'" >> /etc/profile && \
  
negative.code: 
  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('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 && \    
      /tmp/anaconda3/bin/Rscript rkernel_install.R     
  
  CMD ["/tmp/anaconda3/bin/jupyterhub --help"]