Flutter - Using PathUrlStrategy on Azure Static Web App

I have a flutter web app that runs fine locally, however, when uploaded to the Azure infrastructure (via Azure Static Web Apps) I run into problems using the PathUrlStrategy option - when the url is entered manually there's a 404 returned. From here it states that there's some server config to do (but isn't clear about what).

After a bit of digging, I've found a reference to a .htaccess file (problem seems to be similar - treating the path as a subdirectory) but I'm not sure how to apply it to the static web app config?

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteBase /
  RewriteRule ^index\.html$ - [L]
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule . /index.html [L]
</IfModule>

Thanks in advance,

Okay - got there in the end!

Using this, specifically this bit:

{
  "navigationFallback": {
    "rewrite": "/index.html"
  }
}

I've added a staticwebapp.config.json file to the root of the flutter app. This didn't seem to be utilised until also adding this line to pubspec.yaml

  assets:
    - staticwebapp.config.json