anchor.diff:    autogen \
     libtool
   
  -RUN DEBIAN_FRONTEND=noninteractive apt-get install -y \
  +RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
     curl \
     libxml-parser-perl \
     git \
  
positive.code: FROM ubuntu:16.04
  MAINTAINER Alex Harrington <alex@springsignage.com>
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y software-properties-common
  
  RUN DEBIAN_FRONTEND=noninteractive add-apt-repository ppa:ubuntu-toolchain-r/test && apt-get update
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y \
    software-properties-common \
    cmake
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y \
    libgtkmm-3.0-dev \
    libgstreamer1.0-dev \
    libgstreamer-plugins-base1.0-dev \
  
negative.code:   gstreamer1.0-tools \
    libxss-dev
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
    mesa-common-dev \
    libgl1-mesa-dev \
    libgles2-mesa-dev \
  