language: node_js
node_js:
  - node # uses most recent stable node version
dist: trusty # uses trusty environment
sudo: false # when on trusty, uses Docker containers for speed
before_install:
  - npm install -g greenkeeper-lockfile # needed to keep package-lock in sync
install:
  - npm i # disable npm ci for greenkeeper's sake
before_script:
  - greenkeeper-lockfile-update
after_script:
  - greenkeeper-lockfile-upload