docker怎么安装php项目

$ docker pull php:5.6-fpm-alpine3.8
$ docker pull nginx
$ docker pull mysql

$ mkdir lnmp
$ cd lnmp
$ mkdir -p nginx/www nginx/logs nginx/conf

<?php
  phpinfo();
?>

server {
	listen	80;
	server_name	localhost;

	location / {
		root	/usr/share/nginx/html;
		index	index.html index.htm index.php;
	}

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

	location ~ \.php$ {
		fastcgi_pass	php:9000;
		fastcgi_index	index.php;
		fastcgi_param	SCRIPT_FILENAME	/www/$fastcgi_script_name;
		include		fastcgi_params;
	}
}

version: "2.1"
services:
    nginx:
        image: nginx
        ports:
            - "80:80"
        volumes: 
            - ~/Projects/sh-valley/docker-conf/lnmp/nginx/www:/usr/share/nginx/html
            - ~/Projects/sh-valley/docker-conf/lnmp/nginx/conf:/etc/nginx/conf.d
            - ~/Projects/sh-valley/docker-conf/lnmp/nginx/logs:/var/log/nginx
        networks:
            - lnmp-network
    php:
        image: php:5.6-fpm-alpine3.8
        volumes:
            - ~/Projects/sh-valley/docker-conf/lnmp/nginx/www:/www
        networks:
            - lnmp-network
    mysql:
        image: mysql
        ports:
            - "3306:3306"
        environment:
            - MYSQL_ROOT_PASSWORD=123456
        networks:
            - lnmp-network
networks: 
    lnmp-network:

$ docker-compose up -d
Creating network "lnmp_php-network" with the default driver
Creating lnmp_nginx_1 ... done
Creating lnmp_php_1   ... done

$ docker-php-ext-install mysql