Allow last-minute editing of interfaces file

Allow this to happen before the installer completes, rather than once
the system starts up.

buildiso.sh

@@ -101,7 +101,7 @@ prepare_iso() {
 
 prepare_rootfs() {
     echo -n "Preparing Debian live installation via debootstrap... "
-    SQUASHFS_PKGLIST="mdadm,lvm2,parted,gdisk,debootstrap,grub-pc,grub-efi-amd64,linux-image-amd64,sipcalc,live-boot,dosfstools"
+    SQUASHFS_PKGLIST="mdadm,lvm2,parted,gdisk,debootstrap,grub-pc,grub-efi-amd64,linux-image-amd64,sipcalc,live-boot,dosfstools,vim"
     if [[ ! -d artifacts/debootstrap ]]; then
         sudo /usr/sbin/debootstrap \
             --include=${SQUASHFS_PKGLIST} \

install.sh

@@ -340,6 +340,13 @@ chroot ${target} grub-install --target=${bios_target} ${target_disk} >&2
 chroot ${target} grub-mkconfig -o /boot/grub/grub.cfg >&2
 echo "done."
 
+echo
+echo "Edit the /etc/network/interfaces file in the target before completing setup? [y/N]"
+read edit_ifaces
+if [[ ${edit_ifaces} == 'y' or ${edit_ifaces} == 'Y' ]]; then
+    vim ${target}/etc/network/interfaces
+fi  
+
 cleanup
 
 echo "-------------------------------------------------------------------------------------"