title: Node-sass binding problem in Github-Actions
body: <p>I'm setting up a GitHub action with following steps</p>
  
  <pre><code>runs-on: ubuntu-latest 
  steps:
  - uses: actions/checkout@master
  - uses: borales/actions-yarn@master
    with:
      cmd: install # will run `yarn install` command
  - uses: actions/setup-node@master
    with:
      node-version: '12.x'
  - run: npm run build:prod
  </code></pre>
  
  <p>It crashes on building the app becuase of OS mismatch on Node Sass library</p>
  
  <blockquote>
    <p>./node_modules/font-awesome-loader/font-awesome.config.js) Module
    build failed (from ./node_modules/sass-loader/dist/cjs.js): Error:
    Missing binding
    /home/runner/work/xxx/xxx/node_modules/node-sass/vendor/linux-x64-72/binding.node
    Node Sass could not find a binding for your current environment:
    <strong>Linux</strong> 64-bit with Node.js 12.x</p>
    
    <p>Found bindings for the following environments:
      - <strong>Linux/musl</strong> 64-bit with Node.js 12.x</p>
  </blockquote>
  
  <p>Running <code>npm rebuild node-sass</code> as a step causes errors since the agent does not have admin permissions.</p>
  
  <p>Any idea why Github-Actions is giving me linux/musl instead of linux?</p>