step 1

禁用selinux
由于Selinux和LXC有冲突，所以需要禁用selinux。编辑/etc/selinux/config，设置两个关键变量。
SELINUX=disabled
SELINUXTYPE=targeted

安装 Docker :
$ sudo yum install docker

启动 Docker 进程
$ sudo service docker start
# systemctl start docker
想要开机启动 Docker ，我们需要执行如下的命令：
$ sudo chkconfig docker on

现在测试一下是否正常工作.
$ sudo docker run -i -t fedora /bin/bash

注意: 如果你运行的时候提示一个 Cannot start container 的错误，错误中提到了 SELINUX 或者 权限不足。你需要更新 SELINUX 规则。你可以使用 sudo yum upgrade selinux-policy 然后重启。

Docker会默认将数据文件存放在/var/lib/docker目录，如果该目录所在的分区不是很大，那么建议将这个目录改到其他容量将大的分区下 /other/dir。
# systemctl stop docker
编辑docker.service
/usr/lib/systemd/system/docker.service

将ExecStart=/usr/bin/docker -d改为ExecStart=/usr/bin/docker -d -g /other/dir。

然后
# systemctl start docker

step 2

然后下载ubuntu的image：
# docker pull ubuntu:14.04

再创建一个名为Dockerfile的文件，加入下列内容：

FROM ubuntu:14.04

ADD sources.list /etc/apt/sources.list

ENV DEBIAN_FRONTEND noninteractive
RUN apt-get -qq update
RUN apt-get install -y git-core gnupg flex bison gperf build-essential zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-dev:i386 g++-multilib mingw32 schedtool tofrodos python-markdown pngquant libxml2-utils xsltproc zlib1g-dev:i386 libxext-dev:i386 openjdk-7-jdk

WORKDIR /var/aosp

保存Dockerfile文件，然后在同目录下新建一个sources.list文件，也就是ubuntu的软件源配置文件，里面根据你所使用的镜像填入对应地址。sources.list的内容见最后

接下来就可以构建新的image了，在Dockerfile所在目录运行：其中aosp-build为image名称，可随意修改。
# docker build -t aosp-build .

等构建完成后，我们就可以在得到的image上运行命令，并创建container了，比如运行一个bash shell，并创建一个在宿主机和container之间共享的目录：
# docker run -v /host/aosp-dir:/var/aosp/source -i -t --name aosp aosp-build bash

这里宿主机上的/host/aosp-dir目录将会和container中的/var/aosp/source目录共享，并且使用--name选项指定了container的名字，以后便可以通过下面的命令再次启动这个container：

# docker start -i -a aosp

ubuntu 14.04 sources.list

# deb cdrom:[Ubuntu 14.04 trusty Vervet - Release amd64 (20140422)]/ trusty main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://mirrors.yun-idc.com/ubuntu/ trusty main restricted
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://mirrors.yun-idc.com/ubuntu/ trusty-updates main restricted
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://mirrors.yun-idc.com/ubuntu/ trusty universe
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty universe
deb http://mirrors.yun-idc.com/ubuntu/ trusty-updates universe
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://mirrors.yun-idc.com/ubuntu/ trusty multiverse
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty multiverse
deb http://mirrors.yun-idc.com/ubuntu/ trusty-updates multiverse
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://mirrors.yun-idc.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-backports main restricted universe multiverse

deb http://mirrors.yun-idc.com/ubuntu/ trusty-security main restricted
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-security main restricted
deb http://mirrors.yun-idc.com/ubuntu/ trusty-security universe
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-security universe
deb http://mirrors.yun-idc.com/ubuntu/ trusty-security multiverse
deb-src http://mirrors.yun-idc.com/ubuntu/ trusty-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu trusty partner
deb-src http://archive.canonical.com/ubuntu trusty partner
deb http://archive.getdeb.net/ubuntu trusty-getdeb apps