fix: exclude Alpine service supervision from native discovery

AppImage/scripts/native_app_discovery.py

@@ -46,6 +46,8 @@ _NAME = re.compile(r'[A-Za-z0-9][A-Za-z0-9_.+@-]{0,63}\Z')
 _VERSION = re.compile(r'v?\d+(?:\.\d+){1,4}(?:[-+._][A-Za-z0-9.-]+)?\Z')
 _SYSTEM = {
     'ssh', 'sshd', 'cron', 'crond', 'postfix', 'rsyslog', 'syslog', 'syslog-ng',
+    # Alpine/OpenRC system logging and service supervision are not apps.
+    'klogd', 'syslogd', 'openrc-user', 'runit', 'runsvdir', 'runsv', 'supervise-daemon',
     'dbus', 'dbus-broker', 'systemd', 'udev', 'networking', 'network', 'networkmanager',
     'dhcpcd', 'dhclient', 'chrony', 'chronyd', 'ntp', 'ntpd', 'openntpd', 'agetty',
     'getty', 'login', 'polkit', 'polkitd', 'accounts-daemon', 'acpid', 'anacron',

AppImage/scripts/tests/test_native_app_discovery.py

@@ -126,6 +126,24 @@ class DiscoveryFixtures(unittest.TestCase):
                 self.assertEqual(result['candidates'], [])
                 self.assertFalse(any(native.FOOTPRINT_SCRIPT in call for call in self.calls))
 
+    def test_alpine_openrc_infrastructure_has_zero_footprint_probes(self):
+        # Actual Alpine 3.24.1 CT217 init metadata: klogd, user and runsvdir.
+        # The runsvdir definition can exist without /usr/bin/runsvdir installed;
+        # rejecting it must precede probing, not turn the scan into partial.
+        for name, executable in (
+            ('klogd', '/sbin/klogd'),
+            ('user', '/usr/libexec/rc/bin/openrc-user'),
+            ('runsvdir', '/usr/bin/runsvdir'),
+            ('renamed-system-service', '/usr/libexec/rc/bin/openrc-user'),
+        ):
+            with self.subTest(name=name):
+                self.calls.clear()
+                result = native.scan(101, self.runner(
+                    service(name=name, exe=executable, directory='', manager='openrc')))
+                self.assertEqual(result['status'], 'complete')
+                self.assertEqual(result['candidates'], [])
+                self.assertFalse(any(native.FOOTPRINT_SCRIPT in call for call in self.calls))
+
     def test_helper_services_and_templates_have_zero_footprint_probes(self):
         cases = [
             ('netpulse-stable-update', '/bin/bash', '/opt/netpulse', '/opt/netpulse/stable-apply.sh'),