Florian Preinstorfer 4a941a2cb4 Refactor Debian/Ubuntu package
Move files for packaging outside the docs directory into its own
packaging directory. Replace the existing postinstall and postremove
scripts with Debian maintainerscripts to behave more like a typical
Debian package:

* Start and enable the headscale systemd service by default
* Does not print informational messages
* No longer stop and disable the service on updates

This package also performs migrations for all changes done in previous
package versions on upgrade:

* Set login shell to /usr/sbin/nologin
* Set home directory to /var/lib/headscale
* Migrate to system UID/GID

The package is lintian-clean with a few exceptions that are documented
as excludes and it passes puipars (both tested on Debian 12).

The following scenarious were tested on Ubuntu 22.04, Ubuntu 24.04,
Debian 11, Debian 12:

* Install
* Install same version again
* Install -> Remove -> Install
* Install -> Purge -> Install
* Purge
* Update from 0.22.0
* Update from 0.26.0

See: #2278
See: #2133
Fixes: #2311
2025-05-21 15:40:32 +02:00

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#!/bin/sh
# prerm script for headscale.
set -e
# Summary of how this script can be called:
# * <prerm> 'remove'
# * <old-prerm> 'upgrade' <new-version>
# * <new-prerm> 'failed-upgrade' <old-version>
# * <conflictor's-prerm> 'remove' 'in-favour' <package> <new-version>
# * <deconfigured's-prerm> 'deconfigure' 'in-favour'
# <package-being-installed> <version> 'removing'
# <conflicting-package> <version>
# for details, see https://www.debian.org/doc/debian-policy/ or
# the debian-policy package.
case "$1" in
remove)
if [ -d /run/systemd/system ]; then
deb-systemd-invoke stop headscale.service >/dev/null || true
fi
;;
upgrade|deconfigure)
;;
failed-upgrade)
;;
*)
echo "prerm called with unknown argument '$1'" >&2
exit 1
;;
esac