travis-ci 中运行 puppeteer

const browser = await puppeteer.launch({args: ['--no-sandbox']});

language: node_js
node_js:
  - "9"
dist: trusty
sudo: false  
addons:
  chrome: stable
before_install:
  - google-chrome-stable --headless --disable-gpu --remote-debugging-port=9222 http://localhost &
cache:
  yarn: true
  directories:
    - node_modules

install:
  - yarn install

script:
  - node -v

branches:
  only:
    - master
env:
 global: