YML file that ties publishes to surge.sh on commit. Secrets SURGE_DOMAIN and SURGE_TOKEN are required (to get the latter just do "surge token" in bash)

surge.yml

name: build+deploy

on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    name: Publish to Surge.sh
    
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with:
          node-version: 16
      - run: npm install -g surge
      - run: surge ./ ${{ secrets.SURGE_DOMAIN }} --token ${{ secrets.SURGE_TOKEN }}