title: Firebase Hosting - Flutter Web App hosting of extra .html page
body: <p>I am currently working on a Flutter web app that is being hosted on Firebase. The web-app has an image upload function for the user, that uses another HTML page that is living in the assets folder (doing this because I use some JS libs on this page - that I didnt find for dart).  This html page gets called from dart in an extra window - locally this works fine - i am just opening the page at <em>localhost/assets/html/uploadImage.html</em> and the window appears. However this does not work when hosted on Firebase. Here i am calling  <em>/assets/html/uploadImage.html</em> - but just get a blank page. I kind of understand that static files do get hosted differently on Firebase, than on local - but I dont understand what I am doing wrong right here. Is there something configurable to have that one extra page hosted as well?</p>
  
  <p>Happy to hear your thoughts!</p>