server {
    listen 443 ssl;
    server_name files.note.example.com;

    location ^~ /f/ {
        proxy_pass http://rustpad:3000;

        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header Cookie "";
        proxy_set_header Authorization "";

        proxy_hide_header Set-Cookie;

        proxy_intercept_errors on;
        error_page 404 = @file_not_found;
    }

    location @file_not_found {
        internal;
        default_type text/plain;
        return 404 "Not Found\n";
    }

    location / {
        default_type text/plain;
        return 404 "Not Found\n";
    }
}