anchor.diff:      rm -rf root/tutorials
   
   ## Set paths for ROOT
  -ENV PATH=/usr/local/bin:${PATH} 
  -ENV ROOTSYS=/app/root 
  -ENV PATH=${PATH}:${ROOTSYS}/bin 
  +ENV PATH=/usr/local/bin:${PATH}
  +ENV ROOTSYS=/app/root
  +ENV PATH=${PATH}:${ROOTSYS}/bin
   ENV LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${ROOTSYS}/lib
   
  -## Install samtools 
  +## Install samtools
   RUN wget --no-verbose https://github.com/samtools/samtools/releases/download/1.10/samtools-1.10.tar.bz2 && \
       bunzip2 samtools-1.10.tar.bz2 && \
       tar -xf samtools-1.10.tar && \
  
positive.code:     apt-get purge && \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
      update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
      
  WORKDIR /app
  
  ## Install ROOT
  
negative.code: 
  ## Install wget and unzip
  RUN apt-get update && \
      apt-get install -y --no-install-recommends \
      build-essential \
      ca-certificates \
      cmake \
      language-pack-en-base \
      libbz2-dev \
  