Adding the code

hooks.zerotier.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# This hook copies host zerotier into initramfs
+
+set -e
+
+case "${1:-}" in
+  prereqs)  echo ""; exit 0;;
+esac
+
+ZT_APP=/usr/sbin/zerotier-one
+ZT_CLI=/usr/sbin/zerotier-cli
+ZT_ID=/usr/sbin/zerotier-idtool
+ZTCFG=/var/lib/zerotier-one/
+
+# if ZT not on machine, exit
+if [ ! -f ${ZT_APP} ]; then
+	exit 0
+fi
+
+[ -r /usr/share/initramfs-tools/hook-functions ] || exit 0
+. /usr/share/initramfs-tools/hook-functions
+
+
+copy_exec ${ZT_APP} ${ZT_APP}
+copy_exec ${ZT_CLI} ${ZT_CLI}
+copy_exec ${ZT_ID} ${ZT_ID}
+copy_exec ${ZT_APP} ${ZT_APP}
+mkdir -p ${DESTDIR}/var/lib
+mkdir -p ${DESTDIR}/var/log
+cp -rfpL ${ZTCFG} ${DESTDIR}/${ZTCFG}
+
+manual_add_modules tun