anchor.diff:  # SeleniumBase Docker Image
  -FROM ubuntu:14.04
  +FROM ubuntu:17.10
   
   #=======================================
   # Install Python and Basic Python Tools
  
positive.code: #=====================
  COPY seleniumbase /SeleniumBase/seleniumbase/
  COPY examples /SeleniumBase/examples/
  COPY requirements.txt /SeleniumBase/requirements.txt
  COPY setup.py /SeleniumBase/setup.py
  RUN pip install --upgrade pip
  
negative.code:     unzip \
      wget \
      curl \
      libxi6 \
      libgconf-2-4 \
      vim \
      xvfb \
    && rm -rf /var/lib/apt/lists/*
  