Nginx configuration for local web server and multiple apps

nginx_local_dev_server.conf

server {
    listen 80;

    server_name ~^(?<app>.+)\.localhost$;
    root /Users/user/www/$app/;
    index index.html index.php;

    location / {

        try_files $uri $uri/ /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 ~* \.php$ {
    
         fastcgi_pass 127.0.0.1:9000;
         include /usr/local/etc/nginx/fastcgi.conf;
    }
}