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