anchor.diff:   && apt-get clean \
    && rm -rf /var/lib/apt/lists/*
   
  +RUN npm install @stencila/encoda@0.85.3
  +
   RUN pip3 install gunicorn
  -RUN npm install @stencila/encoda@0.83.0
   
   RUN useradd -ms /bin/bash director
   WORKDIR /home/director
  
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:       xdg-utils \
        wget
  
  # 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 \
  