how to do the following modifications in NGINX server for codigniter application

the follwing is from

How can I use the script on the NGINX server?

NGINX server does not support .htaccess, so if you upload script files to your server, you will 404 error for all your links. In order for your links to work, you need to make some settings on your server.

server {
        server_name domain.tld;

        root /var/www/codeignitor;
        index index.html index.php;

        # set expiration of assets to MAX for caching
        location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
                expires max;
                log_not_found off;
        }

        location / {
                # Check if a file or directory index file exists, else route it to index.php.
                try_files $uri $uri/ /index.php;
        }

        location ~* \.php$ {
                fastcgi_pass 127.0.0.1:9000;
                include fastcgi.conf;
        }
}

After this, make sure that your “application/config/config.php” file contains the following information:

$config['base_url'] = "http://domain.tld/";
$config['index_page']       = "";
$config['uri_protocol']     = "REQUEST_URI";
An alternative configuration, production ready. You don’t need to modify “config.php”, except for removing “index.php”

$config['base_url'] = "";
$config['index_page']       = "";
$config['uri_protocol']     = "AUTO";

server {
        listen       80;
        server_name  localhost;
        root   /var/www/html/ci;
        autoindex on;
        index index.php;

        location / {

            try_files $uri $uri/ /index.php;

            location = /index.php {

                fastcgi_pass   127.0.0.1:6969;
                fastcgi_param  SCRIPT_FILENAME /var/www/html/ci$fastcgi_script_name;
                include        fastcgi_params;
            }
        }

        location ~ \.php$ {
            return 444;
        }


}