nixos/uptime-kuma: Add additional lockdown settings to systemd unit (#361452)

        DynamicUser = true;

        ExecStart = "${cfg.package}/bin/uptime-kuma-server";

        Restart = "on-failure";

        ProtectHome = true;

        ProtectSystem = "strict";

        PrivateTmp = true;

        AmbientCapabilities = "";

        CapabilityBoundingSet = "";

        LockPersonality = true;

        MemoryDenyWriteExecute = false; # enabling it breaks execution

        NoNewPrivileges = true;

        PrivateDevices = true;

        ProtectHostname = true;

        PrivateMounts = true;

        PrivateTmp = true;

        ProtectClock = true;

        ProtectKernelTunables = true;

        ProtectKernelModules = true;

        ProtectKernelLogs = true;

        ProtectControlGroups = true;

        NoNewPrivileges = true;

        ProtectHome = true;

        ProtectHostname = true;

        ProtectKernelLogs = true;

        ProtectKernelModules = true;

        ProtectKernelTunables = true;

        ProtectProc = "noaccess";

        ProtectSystem = "strict";

        RemoveIPC = true;

        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" "AF_NETLINK" ];

        RestrictNamespaces = true;

        RestrictRealtime = true;

        RestrictSUIDSGID = true;

        RemoveIPC = true;

        PrivateMounts = true;

        SystemCallArchitectures = "native";

        UMask = 027;

      };

    };

  };