The new mirror= option takes a mirror URL and creates a new mirrorlist.
When setting mirror=auto, the mirror is taken from archiso_http_srv in
order to keep using the mirror selected in the netboot menu.
Using a separate shell script to customize live-enviroment,
makes much more readable code.
Move all thing except:
* Need network access (name resolving).
* Need access to some file outside chroot.
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
