[Arm-dev] Building CentOS7 userland for ARM64 server boards

Hello,

I'm new to CentOS and looking for any useful instructions/documentation 
to read up on.


I would like to learn about how the rootfs has been generated for CentOS.


The Alternative Architecture Centos SIG already prepared a tar archive 
containing a CentOS 7 userland for ARM64 server boards:

curl -sSL -o CentOS-7-aarch64-rootfs-7.3.1611.tar.xz 
http://mirror.centos.org/altarch/7/isos/aarch64


Could someone provide instructions on the steps take to build this exact 
image?


Thanks,
  Scott