archlinux-aarch64 base image

1. download this repoaitory
2. cd to this repository folder
3. download the lastes archlinux-aarch64 rootfs tarball from archlinuxarm.org for example by executing:

wget -c http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz

4. build docker image from Dockerfile with:

docker build -t archlinux-aarch64 .