local/linux: run container in privileged mode

Running systemd service in a container is not very common. We use it for testing, however it has its disadvantages.
Some container runtimes prohibit creating UTS namespaces. That leads to a warning:
"forwarder.service: ProtectHostname=yes is configured, but UTS namespace setup is prohibited (container manager?), ignoring namespace setup."
Giving a container privileged mode fixes this issue.

local/linux/Makefile

@@ -33,7 +33,7 @@ fedora: forwarder.rpm
 
 .PHONY: .up
 .up:
-	@podman run -p 3128:3128 -d -v ./forwarder.$(EXT):/forwarder.$(EXT) --name forwarder-testing --replace $(IMG)
+	@podman run -p 3128:3128 -d -v ./forwarder.$(EXT):/forwarder.$(EXT) --privileged --name forwarder-testing --replace $(IMG)
 	@podman exec forwarder-testing $(INSTALL_CMD) "/forwarder.$(EXT)"
 	@podman cp ./forwarder.yaml forwarder-testing:/etc/forwarder/forwarder.yaml
 	@podman exec forwarder-testing systemctl start forwarder