name: "Build"
on: [push]
jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        jekyll: ["~> 3.9", "~> 4.2"]
    steps:
      - uses: actions/checkout@v2
      - uses: ruby/setup-ruby@v1
        with:
          ruby-version: 2.5
      - name: 'Install dependencies'
        run: bundle install
        env: 
          JEKYLL_VERSION: ${{ matrix.jekyll }}
      - name: 'Run tests'
        run: script/cibuild
        env: 
          JEKYLL_VERSION: ${{ matrix.jekyll }}

Add a basic workflow file for building minima
Add a basic workflow file for building minima

This will replace the travis CI configuration
