Deploy to surge.sh from appveyor

Appveyor.yml

environment:
  SURGE_LOGIN: login
  SURGE_TOKEN:
    secure: secure-string
install:
  - ps: Install-Product node 0
  - npm install -g npm
  - npm install
build: off
build_script:
  - npm run build
deploy_script:
  - npm run deploy

Scripts section in package.json

"scripts": {
  "build": "webpack --config webpack.config.js",
  "deploy": "surge --project ./dist --domain domain.surge.sh"
}