nginx minimal reverse proxy config

nginx.minimal.conf

events {}

http {
    server {
        listen       8080;
        server_name  a.com;

        location / {
            proxy_pass   http://127.0.0.1:8888;
        }
    }

    server {
        listen       8080;
        server_name  b.com;

        location / {
            proxy_pass   http://127.0.0.1:7777;
        }
    }
}