root@host:~# dd if=/dev/zero of=Debian.img count=0 bs=1M seek=1K

root@host:~# mkfs.ext4 -F -L Debian Debian.img

root@host:~# mount -t ext4 -o loop,rw Debian.img /mnt

root@host:~# cp -r debroot/* /mnt/; sync

root@host:~# umount /mnt

root@android:~# mkdir /data/debian
root@android:~# busybox mount -o loop,rw -t ext4 <IMAGE> /data/debian

root@android:~# export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
root@android:~# export USER=root
root@android:~# export HOME=/root
root@android:~# busybox chroot /data/debian /bin/bash
root@localhost:/#

root@localhost:/# /debootstrap/debootstrap --second-stage

 1 export DEBMNT=/data/debian
 2 busybox mount -t ext2 <IMAGE> $DEBMNT
 3 busybox mount -t proc none $DEBMNT/proc
 4 busybox mount -t sysfs none $DEBMNT/sys
 5 busybox mount -o bind /dev $DEBMNT/dev
 6 busybox mount -t devpts none $DEBMNT/dev/pts
 7 unset LD_PRELOAD
 8 LAST_PATH=$PATH
 9 export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
10 export USER=root
11 export HOME=/root
12 export TERM=linux
13 busybox chroot $DEBMNT /bin/bash
14 export PATH=$LAST_PATH
15 sync
16 busybox umount $DEBMNT/dev/pts
17 busybox umount $DEBMNT/dev
18 busybox umount $DEBMNT/proc
19 busybox umount $DEBMNT/sys
20 busybox umount $DEBMNT || sh -c "busybox umount -l $DEBMNT && echo 'Force unmounted!'"

root@localhost:/# vi /etc/apt/sources.list

1 deb http://ftp.ir.debian.org/debian/ jessie contrib main non-free
2 deb-src http://ftp.ir.debian.org/debian/ jessie contrib main non-free
3 
4 deb http://ftp.ir.debian.org/debian/ jessie-backports contrib main non-free
5 deb-src http://ftp.ir.debian.org/debian/ jessie-backports contrib main non-free
6 
7 deb http://ftp.ir.debian.org/debian/ jessie-updates contrib main non-free
8 deb-src http://ftp.ir.debian.org/debian/ jessie-updates contrib main non-free

root@localhost:/# apt-get update