init: clear machine id

systemd create new uniq machine-id on first boot. so that during mass deployment of containers, virtual machines or live there are no identical machine-ids on computers in the same network. Reported by obirvalger@

init: clear machine id
ebe22ccd · Anton Midyukov · 58c4156b · ebe22ccd
Commit ebe22ccd authored Feb 11, 2022 by Anton Midyukov
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99-clear-machine-id features.in/init/rootfs/image-scripts.d/99-clear-machine-id +10 -0

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--- a/features.in/init/rootfs/image-scripts.d/99-clear-machine-id
+++ b/features.in/init/rootfs/image-scripts.d/99-clear-machine-id
+#!/bin/sh -eu
+
+etc_machine_id=/etc/machine-id
+dbus_machine_id=/var/lib/dbus/machine-id
+
+[ -f "$etc_machine_id" ] || exit 0
+
+rm -f "$etc_machine_id" "$dbus_machine_id"
+touch "$etc_machine_id"
+chmod 0444 "$etc_machine_id"