`brotli_static` works on localhost but not on real server

With the following example nginx.conf snippet:

    server {
        listen 8080 default_server;

        location / {
            brotli off;
            brotli_static on;

            root /usr/share/nginx/build;
            try_files $uri =404;
        }

we correctly get the [...].js.br versions when requesting [...].js on localhost, but when deployed to cloud service web app the uncompressed file [...].js is returned despite both scenarios have Accept encoding: gzip, deflate, br sent by the Chrome browser.

If adding

    brotli on;
    brotli_comp_level 4;

as well, we still correctly get the statically compressed files on localhost, and in deployed app we get dynamically compressed versions (i.e. they are compressed, but not the expected statically compressed files).

I.e. the problem appears to be limited to statically compressed file not on localhost.

Any input on how to debug or what this could be due to? E.g. is localhost and external server treated differently and requires different nginx setups, or could it be related to http (localhost) and https when accessing it on the cloud app? Or related to cloud vendor probably having their own proxy in front of ours? For gzip there is gzip_proxied, but this appears not to be necessary to configure with ngx_brotli according to #53. :thinking:

google / ngx_brotli

`brotli_static` works on localhost but not on real server #128