anchor.diff:      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
  
positive.code: 
  ## Install wget and unzip
  RUN apt-get update && \
      apt-get upgrade -y && \
      apt-get install -y \
      build-essential \
      cmake \
      language-pack-en-base \
      libbz2-dev \
  
negative.code:     rm -rf root/tutorials
  
  ## Set paths for ROOT
  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
  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 && \
  