Example nginx with alias without subdomain

site.conf

server {

    listen 80 deferred;

    server_name server.com;
    index index.php;
    charset utf-8;

    # App 1 (main app)
    location / {
        root /var/www/app1/current/public;
        try_files $uri $uri/ /index.php?$query_string;

        error_log /var/log/nginx/app1.notice.log notice;
        error_log /var/log/nginx/app1.error.log error;

        location ~* ^/index\.php$ {
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass 127.0.0.1:9000;
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME /var/www/app1/current/public/index.php;
            fastcgi_intercept_errors off;
            fastcgi_buffer_size 16k;
            fastcgi_buffers 4 16k;
        }
    }

    # App 2
    location ~* /app2 {
        alias /var/www/app2/current/public;
        try_files $uri $uri/ /app2/index.php?$query_string;

        error_log /var/log/nginx/app2.notice.log notice;
        error_log /var/log/nginx/app2.error.log error;

        location ~* ^/app2/index\.php$ {
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass 127.0.0.1:9000;
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME /var/www/app2/current/public/index.php;
            fastcgi_intercept_errors off;
            fastcgi_buffer_size 16k;
            fastcgi_buffers 4 16k;
        }
    }

    # Files
    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    # Error
    access_log off;
    rewrite_log on;

    # Disable .htaccess access
    location ~ /\.ht {
        deny all;
    }
}