linux中Unable to find image ‘xxx’ locally解決辦法

阿里雲的VPS，安裝的是鏡像市場中的Docker運行環境（Ubuntu 64位）系統，用docker pull鏡像的時候會報錯，具體錯誤如下：

Unable to find image ‘busybox’ locally
Pulling repository registry
2016/08/24 16:29:53 Could not reach any registry endpoint

docker version 查看到的資訊如下：

Client version: 1.2.0
Client API version: 1.14
Go version (client): go1.3.1
Git commit (client): fa7b24f
OS/Arch (client): linux/amd64
Server version: 1.2.0
Server API version: 1.14
Go version (server): go1.3.1
Git commit (server): fa7b24f

針對此錯誤的解決方案如下：

1，需要升級docker，具體命令如下：

sudo apt-get install docker.io

2，不過阿里的這個鏡像源有點問題，升級的時候部分源是404，會報錯。需要修改/etc/apt/sources.list檔案，修改為如下內容：

deb http://mirrors.aliyun.com/ubuntu/ trusty main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main multiverse restricted universe

3，apt-get clean && apt-get update

4，然後繼續sudo apt-get install docker.io

升級完成之後就可以成功解決前文中提到的錯誤。