Add section as suggested in the issue

Author: vmcj

Makefile

@@ -49,6 +49,17 @@ judgehost: judgehost-configure paths.mk config
 docs: paths.mk config
 install-domserver: domserver composer-dump-autoload domserver-create-dirs
 install-judgehost: judgehost judgehost-create-dirs
+	@echo ""
+	@echo "========== Judgehost Install Completed =========="
+	@echo ""
+	@echo "Optionally:"
+	@echo "    - Install the create-cgroup service to setup the secure judging restrictions:"
+	@echo "        cp <DOMSERVER_UNPACK_PATH>/judge/create-cgroups.service /etc/systemd/system/"
+	@echo "    - Install the judgehost service:"
+	@echo "        cp <DOMSERVER_UNPACK_PATH>/judge/[email protected] /etc/systemd/system/"
+	@echo "    - You can enable the judghost on core 1 as:"
+	@echo "        systemctl enable domjudge-judgedaemon@1"
+	@echo ""
 install-docs: docs-create-dirs
 dist: configure composer-dependencies