hassio-addons/filebrowser/rootfs/etc/nginx/servers/ingress.conf

server {
    listen %%interface%%:%%port%% default_server;

    include /etc/nginx/includes/server_params.conf;
    include /etc/nginx/includes/proxy_params.conf;
    
    client_max_body_size 0;

    # Redirect bare root to /files/ so the Vue Router never sees path "/"
    # (Vue Router 4's /:catchAll(.*)*  redirect crashes when catchAll is undefined)
    location = / {
        return 302 files/;
    }

   location / {
       add_header Access-Control-Allow-Origin *;
       proxy_connect_timeout 30m;
       proxy_send_timeout 30m;
       proxy_read_timeout 30m;
       proxy_pass         %%protocol%%://backend%%subpath%%;
  }

}