在上一篇中，我们讲到了如何配置多个容器并且定制属于自己的镜像，但是容器的数据性能以及持久如何保证的？本篇将通过介绍Docker Volume来说明这个问题，涉及到的架构如下图所示：
1、 说到Volume实际上有多种方式可以实现，第一种方式为采用Dockerfile，但这种方式要找到对应的volume存放在主机哪里比较麻烦。首先我们查找我们存在哪些images：
2、 然后我们写一个dockerfile，并在其中指定Volume：
3、 接着我们使用docker file构建镜像（关于Dockerfile后面有讲到）：
4、 这时我们就创建起一个带有Volume的基础镜像，而基于这个基础镜像所创建的容器都会有一个/VMCTest的挂载点，我们可以测试创建一个容器：
5、 我们来看下是否存在一个/VMCTest挂载点，我们创建一个文件以作测试：
6、 那么这个VMCTest究竟存在哪里的呢？我们可以通过以下命令来查看实际位置:
7、可以看到实际的映射位置，我们可以进入到该路径看下，刚刚创建的测试文件在不在：
8、OK，关于数据卷的第一种用法，我们就介绍到这里，下一篇我们将介绍另外一种更加暴力的挂载方式。
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