server {
    listen       80;
    listen  [::]:80;
    server_name  localhost;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
        try_files $uri $uri/ /index.html;

        # 针对 HTML 文件设置不缓存
        if ($request_filename ~* .*\.(?:htm|html)$ ) {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
        }
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}