fix(rootfs-to-image): create NFS rootfs archive after hooks finalize the tree

The archive was created inside the if/else block at the top of
create_image_from_sdcard_rootfs(), BEFORE update_initramfs and
pre_umount_final_image hooks run.  Any rootfs changes made by those
hooks (initramfs regeneration, fstab fixups, extension tweaks) were
missing from the archive.

Move archive creation to after pre_umount_final_image so the tarball
captures the fully finalized rootfs tree.

Author: iav

lib/functions/image/rootfs-to-image.sh

@@ -51,13 +51,6 @@ function create_image_from_sdcard_rootfs() {
 			--exclude="/sys/*" \
 			$exclude_home \
 			--info=progress0,stats1 $SDCARD/ $MOUNT/
-	else
-		display_alert "Creating rootfs archive" "rootfs.tgz" "info"
-		tar cp --xattrs --directory=$SDCARD/ --exclude='./boot/*' --exclude='./dev/*' --exclude='./proc/*' --exclude='./run/*' --exclude='./tmp/*' \
-			--exclude='./sys/*' $exclude_home . |
-			pv -p -b -r -s "$(du -sb "$SDCARD"/ | cut -f1)" \
-				-N "$(logging_echo_prefix_for_pv "create_rootfs_archive") rootfs.tgz" |
-			gzip -c > "$DEST/images/${version}-rootfs.tgz"
 	fi
 
 	# stage: rsync /boot
@@ -110,6 +103,15 @@ function create_image_from_sdcard_rootfs() {
 		Called before unmounting both `/root` and `/boot`.
 	PRE_UMOUNT_FINAL_IMAGE
 
+	if [[ $ROOTFS_TYPE == nfs ]]; then
+		display_alert "Creating rootfs archive" "rootfs.tgz" "info"
+		tar cp --xattrs --directory=$SDCARD/ --exclude='./boot/*' --exclude='./dev/*' --exclude='./proc/*' --exclude='./run/*' --exclude='./tmp/*' \
+			--exclude='./sys/*' $exclude_home . |
+			pv -p -b -r -s "$(du -sb "$SDCARD"/ | cut -f1)" \
+				-N "$(logging_echo_prefix_for_pv "create_rootfs_archive") rootfs.tgz" |
+			gzip -c > "$DEST/images/${version}-rootfs.tgz"
+	fi
+
 	if [[ "${SHOW_DEBUG}" == "yes" ]]; then
 		# Check the partition table after the uboot code has been written
 		display_alert "Partition table after write_uboot" "$LOOP" "debug"