How to make/use local cache for build image

I am trying to build an image for both the Orange Pi PC and One

I am on a slow cellular network and pay by the gigabyte for access.

Is there a way to cache the packages for: Installing base system [ Stage 1/2 ] ,  and all the rest?

Each time I try a compile.sh it take hours to re-download the whole set of packages, because the there is almost always at least a few packages that could not be fetched due to network errors, then they are unpacked and a corrupt tar image is saved and the packages are removed. If I save the create_rootfs_cache file with the missing packages, it does not try to reload them, it just errors out cause they are missing.

I am building in a Ubuntu 14.04 VM on a Ubuntu 15.04 host. I have trird various things in compile.sh, currently it is:

BOARD=orangepione
PROGRESS_DISPLAY=plain
PROGRESS_LOG_TO_FILE=yes
RELEASE=jessie
BRANCH=default
NO_APT_CACHER=yes   

And this last attempt my  userpatches/lib.config contains only:
DEBIAN_MIRROR="ftp.tw.debian.org/debian/"
because I am in the Philippines.
 

Larry

Edit: And this pass failed to after 2 hours;

I: Retrieving zlib1g 1:1.2.8.dfsg-2+b1
I: Validating zlib1g 1:1.2.8.dfsg-2+b1
E: Couldn't download packages: libpipeline1
cp: cannot create regular file ‘/home/larryl/armbian/output/cache/sdcard/usr/bin/’: No such file or directory
[ o.k. ] Installing base system [ Stage 2/2 ]
chroot: failed to run command ‘/bin/bash’: No such file or directory
[ error ] ERROR in function create_rootfs_cache [ debootstrap-ng.sh:163 ]
[ error ] Debootstrap base system second stage failed 
[ o.k. ] Process terminated