anchor.diff:        xdg-utils \
         wget
   
  -# Add the NPM13 repository and then install nodejs/npm. Must be done after the previous step since curl is required
  +# Add the Nodesource repository and then install nodejs/npm. 
  +# Must be done after the previous step since curl is required
   RUN curl -sL https://deb.nodesource.com/setup_13.x | bash - \
    && apt-get update \
    && apt-get install -y \
  
positive.code: FROM ubuntu:18.04
  
  ENV DEBIAN_FRONTEND noninteractive
  ENV STENCILA_CLI_VERSION v0.33.4
  
  # apt dependencies from gconf-service onwards are for puppeteer support for Stencila CLI
  RUN apt-get update \
  
negative.code:  && apt-get clean \
   && rm -rf /var/lib/apt/lists/*
  
  RUN npm install @stencila/encoda@0.85.3
  
  RUN pip3 install gunicorn
  
  RUN useradd -ms /bin/bash director
  WORKDIR /home/director
  