I have defined a subdomain on my local server and I want to request to subdomain from docker container but the container can not resolve the subdomain. local server uses nginx and is not a docker container.

Local nginx config

server {
    listen 80;

    root /data/www/html/sites/car/public;
    index index.php index.html index.htm;

    server_name car.localhost;

    location / {
        try_files $uri $uri/ /index.php$is_args$args;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
    }

    location ~ /\.ht {
        deny all;
    }
}

Local server hosts – /etc/hosts

127.0.0.1       car.localhost

Curl error in docker container

echo shell_exec("curl http://car.localhost 2>&1");
Fatal error: Uncaught Exception: [0] cURL error 6: Could not resolve host: car.localhost