Add os cases

SUMMARY.md

@@ -65,11 +65,6 @@
     * [工具和示例](advanced_network/example.md)
     * [编辑网络配置文件](advanced_network/config_file.md)
     * [实例：创建一个点到点连接](advanced_network/ptp.md)
-* [实战案例](cases/README.md)
-    * [使用 Supervisor 来管理进程](cases/supervisor.md)
-    * [创建 tomcat\/weblogic 集群](cases/tomcat.md)
-    * [多台物理主机之间的容器互联](cases/container_connect.md)
-    * [标准化开发测试和生产环境](cases/environment.md)
 * [安全](security/README.md)
     * [内核命名空间](security/kernel_ns.md)
     * [控制组](security/control_group.md)
@@ -133,6 +128,13 @@
     * [腾讯云](cloud/qcloud.md)
     * [阿里云](cloud/alicloud.md)
     * [小结](cloud/summary.md)
+* [实战案例-操作系统](cases/os/README.md)
+    * [Busybox](cases/os/busybox.md)
+    * [Alpine](cases/os/alpine.md)
+    * [Debian\/Ubuntu](cases/os/debian.md)
+    * [CentOS\/Fedora](cases/os/centos.md)
+    * [CoreOS](cases/os/coreos.md)
+    * [本章小结](cases/os/summary.md)
 * [附录](appendix/README.md)
     * [附录一：常见问题总结](appendix/faq/README.md)
     * [附录二：热门镜像介绍](appendix/repo/README.md)