首先拉取一个镜像，在这里以NGINX为例
[root@DockServer opt]# docker pull nginx [root@DockServer opt]# docker p_w_picpaths REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest b8efb18f159b 3 weeks ago 107MB
启动NGINX镜像，映射出端口
[root@DockServer opt]# docker run --name webserver -d -p 80:80 nginx 8f62585b370ca34eb8c438adbab0f972e1990cee25000a742c6a2d8e7ee7ba38 [root@DockServer opt]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 8f62585b370c nginx "nginx -g 'daemon ..." 6 seconds ago Up 6 seconds 0.0.0.0:80->80/tcp webserver
访问端口，直接用命令行访问，
[root@DockServer opt]# curl http://127.0.0.1
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>可以看到能够访问在nginx docker里的东东了，下面我们修改下首页内容
进入nginx docker 里面进行修改
进入docker [root@DockServer opt]# docker exec -it webserver bash root@8f62585b370c:/# echo '<h1>Hello, Docker!</h1>' > /usr/share/nginx/html/index.html root@8f62585b370c:/# exit exit
再次访问看看
[root@DockServer opt]# curl http://127.0.0.1 <h1>Hello, Docker!</h1>
可以看出，已经修改成功，我们保存成镜像
[root@DockServer opt]# docker commit --author "Ding Jin <dingjin@gmail.com>" --message "修改nginx默认网页" webserver webserver:v2 sha256:ca35d11b57bac6e3e4ebab15aaff528c8530f7f5e59e00f58fa61e86edf1aa91 [root@DockServer opt]# docker p_w_picpaths REPOSITORY TAG IMAGE ID CREATED SIZE webserver v2 ca35d11b57ba 6 seconds ago 107MB nginx latest b8efb18f159b 3 weeks ago 107MB 已经可以看到webserver:v2镜像了，运行下 [root@DockServer opt]# docker run --name web2 -d -p 81:80 webserver:v2 1647edeba49aa664c0ccf642248f6b30b36c6b08990ede580a5803f1a59ae545 [root@DockServer opt]# curl http://127.0.0.1:81 <h1>Hello, Docker!</h1>
可以了解以下命令，
查看webserver做了哪些更改，即和源镜像对比不同 [root@DockServer opt]# docker diff webserver C /root A /root/.bash_history C /run A /run/nginx.pid C /var C /var/cache C /var/cache/nginx A /var/cache/nginx/uwsgi_temp A /var/cache/nginx/client_temp A /var/cache/nginx/fastcgi_temp A /var/cache/nginx/proxy_temp A /var/cache/nginx/scgi_temp C /usr C /usr/share C /usr/share/nginx C /usr/share/nginx/html 查看webserver:v2历史文件变动记录 [root@DockServer opt]# docker history webserver:v2 IMAGE CREATED CREATED BY SIZE COMMENT ca35d11b57ba 4 minutes ago nginx -g daemon off; 98B 修改nginx默认网页 b8efb18f159b 3 weeks ago /bin/sh -c #(nop) CMD ["nginx" "-g" "daem... 0B <missing> 3 weeks ago /bin/sh -c #(nop) STOPSIGNAL [SIGTERM] 0B <missing> 3 weeks ago /bin/sh -c #(nop) EXPOSE 80/tcp 0B <missing> 3 weeks ago /bin/sh -c ln -sf /dev/stdout /var/log/ngi... 0B <missing> 3 weeks ago /bin/sh -c apt-get update && apt-get inst... 52.2MB <missing> 3 weeks ago /bin/sh -c #(nop) ENV NJS_VERSION=1.13.3.... 0B <missing> 3 weeks ago /bin/sh -c #(nop) ENV NGINX_VERSION=1.13.... 0B <missing> 3 weeks ago /bin/sh -c #(nop) MAINTAINER NGINX Docker... 0B <missing> 3 weeks ago /bin/sh -c #(nop) CMD ["bash"] 0B <missing> 3 weeks ago /bin/sh -c #(nop) ADD file:fa8dd9a679f473a... 55.2MB
结合上篇，我们上传到本地私有仓库，然后就直接可以在本地调用了~~
