add new podman-user-wait-network-online.service

This service is meant to be used by quadlet as replacement for
network-online.target as this does not work for rootless users.

see #22197

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

.gitignore

@@ -4,7 +4,7 @@
 /build/
 /conmon/
 contrib/spec/podman.spec
-contrib/systemd/*/*.service
+contrib/systemd/system/*.service
 *.coverprofile
 coverprofile
 /.coverage

Makefile

@@ -1000,6 +1000,9 @@ install.systemd: $(PODMAN_GENERATED_UNIT_FILES)
 		install ${SELINUXOPT} -m 644 $$unit $(DESTDIR)${USERSYSTEMDDIR}/$$(basename $$unit); \
 		install ${SELINUXOPT} -m 644 $$unit $(DESTDIR)${SYSTEMDDIR}/$$(basename $$unit); \
 	done
+	# Important this unit should only be installed for the user session and is thus not added to the loop above.
+	install ${SELINUXOPT} -m 644 contrib/systemd/user/podman-user-wait-network-online.service \
+		$(DESTDIR)${USERSYSTEMDDIR}/podman-user-wait-network-online.service
 	rm -f $^
 else
 install.systemd:

contrib/systemd/user/podman-user-wait-network-online.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Wait for system level network-online.target as user.
+Documentation=https://github.com/containers/podman/issues/22197
+Documentation=man:podman-systemd.unit(5)
+
+[Service]
+Type=oneshot
+# Set a timeout as by default oneshot does not have one and in case network-online.target
+# never comes online we do not want to block forever, 90s is the default systemd unit timeout.
+TimeoutStartSec=90s
+ExecStart=sh -c 'until systemctl is-active network-online.target; do sleep 0.5; done'
+RemainAfterExit=yes