anchor.diff:  ENV NVM_DIR /usr/local/nvm
   RUN curl https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash
   
  +# snapcraft
  +# From https://github.com/snapcore/snapcraft/tree/master/docker
   RUN apt-get update && \
     apt-get dist-upgrade --yes && \
     apt-get install --yes \
  
positive.code: FROM microsoft/vsts-agent:ubuntu-16.04-standard
  MAINTAINER Joao Moreno <joao.moreno@microsoft.com>
  
  ARG DEBIAN_FRONTEND=noninteractive
  RUN apt-get update
  
  # Dependencies
  RUN apt-get install -y build-essential
  RUN apt-get install -y gcc-multilib g++-multilib
  RUN apt-get install -y git
  RUN apt-get install -y dpkg-dev
  RUN apt-get install -y zip
  RUN apt-get install -y rpm
  RUN apt-get install -y createrepo
  RUN apt-get install -y python-gtk2
  RUN apt-get install -y jq
  RUN apt-get install -y xvfb
  RUN apt-get install -y fakeroot
  RUN apt-get install -y libgtk2.0-0
  RUN apt-get install -y libgconf-2-4
  RUN apt-get install -y libnss3
  RUN apt-get install -y libasound2
  RUN apt-get install -y libxtst6
  RUN apt-get install -y libfuse2
  RUN apt-get install -y libnotify-bin
  RUN apt-get install -y libx11-dev
  RUN apt-get install -y libxss1
  RUN apt-get install -y libx11-xcb-dev
  RUN apt-get install -y libxkbfile-dev
  RUN apt-get install -y bc bsdmainutils
  RUN apt-get install -y libsecret-1-dev
  
  # Xvfb
  # Thanks https://medium.com/@griggheo/running-headless-selenium-webdriver-tests-in-docker-containers-342fdbabf756
  ADD xvfb.init /etc/init.d/xvfb
  RUN chmod +x /etc/init.d/xvfb
  RUN update-rc.d xvfb defaults
  
  
negative.code:   chmod a+x /snap/bin/snapcraft && \
    apt-get autoclean --yes && \
    apt-get clean --yes
  ENV SNAP=/snap/snapcraft/current
  ENV SNAP_NAME=snapcraft
  ENV SNAP_VERSION=beta
  