language: node_js
node_js:
  - '6'
os: linux
sudo: required
dist: trusty
addons:
  apt:
    packages:
      - mesa-utils
      - xvfb
      - libgl1-mesa-dri
      - libglapi-mesa
      - libosmesa6
before_script:
  - export DISPLAY=:99.0; sh -e /etc/init.d/xvfb start
  - sudo apt-get install imagemagick