docker在centos和Ubuntu的安装

CentOS:

http://blog.csdn.net/wuapeng/article/details/51728614

rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm 
除了内核,可能是设备映射库: 
yum upgrade device-mapper-libs -y

http://h2appy.blog.51cto.com/609721/1670017 
这个方法不知行不,推荐上面https://segmentfault.com/a/1190000007238745

Ubuntu:

http://www.jianshu.com/p/5aa8cfef1d08

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