Added --enable-rule-generator, usher for mkinitramfs, and dependencies

SNAP/usher

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+case $1 in
+  preinst)
+    exit 0
+    ;;
+  postinst)
+    KERNEL_VER=`ls -C1rt ${TARGET}/boot/vmlinuz*|sed 's/.*vmlinuz-//'`
+
+    if [[ ${TARGET} ]]; then
+      echo "Running within ${TARGET} for kernel $KERNEL_VER"
+      if ! mountpoint -q ${TARGET}/proc; then
+        mount -t proc none ${TARGET}/proc
+      fi
+
+      chroot ${TARGET} /bin/bash -c "/sbin/mkinitramfs $KERNEL_VER"
+
+      if mountpoint -q ${TARGET}/proc; then
+        umount ${TARGET}/proc
+      fi
+    else
+      echo "Running for kernel $KERNEL_VER"
+      mkinitramfs $KERNEL_VER
+    fi
+    ;;
+  prerm)
+    exit 0
+    ;;
+  postrm)
+    exit 0
+    ;;
+esac