anchor.diff:  #
   RUN easy_install pip && \
       pip install pandocfilters \
  -		pandoc-latex-admonition \
  +		        pandoc-latex-admonition \
                   pandoc-latex-environment \
                   pandoc-latex-barcode \
  -		pandoc-latex-levelup \
  -		pandoc-dalibo-guidelines \ 
  -		icon_font_to_png \
  -		pypdf2  
  +                pandoc-latex-levelup \
  +                pandoc-dalibo-guidelines \ 
  +                icon_font_to_png \
  +                pypdf2  
    
   # https://github.com/chdemko/pandoc-latex-tip/issues/1
   RUN pip install git+https://github.com/chdemko/pandoc-latex-tip.git --egg
  
positive.code:     apt-get -qq -y install python3 python3-dev python3-pip python3-virtualenv && \		
      # required for PDF meta analysis
      apt-get -qq -y install poppler-utils && \		
      # clean up
      apt-get clean && \
      rm -rf /var/lib/apt/lists/*
  
negative.code: #RUN pip install pypdf2  
  
  # Install wkhtmltopdf
  # ENV WKHTMLTOX https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
  # RUN wget -O wkhtmltox.tar.xz ${WKHTMLTOX} && \
  #     tar -xf wkhtmltox.tar.xz
  # ENV PATH ${PATH}:/wkhtmltox/bin
  
  # Entrypoint
  RUN mkdir /pandoc
  WORKDIR /pandoc
  ENTRYPOINT ["pandoc"]
  