Progressive Web App version of ghost blog (install service worker)

Ideas
22

Hey everyone!

So i creted app.manifest file and put it into my /var/www/ghost/content/public

I also added it routes.yml

routes:
  /signup/:
    template: members/signup
    data: page.signup
  /signin/:
    template: members/signin
    data: page.signin
  /membership/:
    template: members/membership
    data: page.membership
  /account/:
    template: members/account
    data: page.account
  /app.manifest/ : app.manifest

But when I open my ghost blog https://ghost.blog/app.manifest, it returns 404. What am I doing wrong?

I want to make my blog a PWA installable from chrome app