In this container is everything installed you need to build your own android rom, e.g. CyanogenMod.
You can start straight from this point.
There exists a user called "android" with password "android". The directories are in the same structure as suggestes on CyanogenMod Wiki.
The source code folder and the ccache folder needs to be linked from outside.
docker run -v ~/android:/home/android/android/system -v ~/ccache:/srv/ccache -i -t --name cyanogenmod-wheezy zwiebelchen/cyanogenmod-wheezy sh -c "screen -s /bin/bash"