server {
    listen       80;
    server_name  www.abd.com;
    location / {
        root     /项目目录/node/dist;
        index    index.html;
    }
}

补充：server_name可以任意：

server {
    listen       80;
    server_name  www.abd.com;
    location /{
        proxy_pass  http://www.abd.com/node/dist/index.html;
    }        
}    

当然，也可以使用重定向