docker pull php:7.3-alpine3.8 

docker run -it --name test php:7.3-alpine3.8  sh

# 安装依赖的第三方包
 echo http://mirrors.ustc.edu.cn/alpine/v3.7/main > /etc/apk/repositories &&   echo http://mirrors.ustc.edu.cn/alpine/v3.7/community >> /etc/apk/repositories
apk --no-cache add autoconf gcc g++ make openssl openssl-dev

#下载swoole
 pecl install swoole-4.3.1 

#开启扩展
docker-php-ext-enable swoole

#查看扩展
php -m   

#将目前环境打包成新镜像
docker commit test swoole:4.3.1

docker run -it --name swoole -p 80:80 -v /home/my/lujing:/pro swoole:4.3.1 sh

"autoload": {
        "psr-4": {
            "App\\": "app/"
        }
    }

$http = new Swoole\Http\Server("0.0.0.0", 80);
$http->on(‘request‘, function ($request,Swoole\Http\Response $response) {
    $response->end("<h1>hello</h1>");
});
$http->start();