title: How to set scope for i18n URLs in a pwa?
body: <p>I have a progressive web-app : <a href="https://api-project-456878020393.firebaseapp.com/fr/" rel="nofollow noreferrer">Click here</a></p>
  
  <p>As you can see, at the end of the domain, there is a /language. My PWA is accessible for /en too as it is completely i18n compatible.</p>
  
  <p>My problem is that when I try to set it up on the desktop it still points to '/' and it cannot find any index.html. The language path is not taken into account it seems.
  Part of my manifest.json is:</p>
  
  <pre><code>  "display": "standalone",
    "scope": "./*",
    "start_url": "/",
  </code></pre>
  
  <p>I have tried setting the scope like this because setting it to "." does not work.
  Now the message is:
  <strong>Property 'scope' ignored. Start url should be within scope of scope URL.</strong></p>
  
  <p>Other point: it is deployed to firebase.</p>
  
  <p>Thanks for any help.</p>