Initial postinstall script

Signed-off-by: Tommy <contact@tommytran.io>

desktop_postinstall.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# Copyright (C) 2021-2024 Thien Tran
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+# Make sure secureboot is in setup mode before running this
+
+# Secure boot enrollment
+sudo sbctl enroll-keys
+sudo sbctl sign /boot/efi/EFI/GRUB/grubx64.efi
+
+# Firewalld setup
+sudo firewall-cmd --set-default-zone=block
+sudo firewall-cmd --permanent --add-service=dhcpv6-client
+sudo firewall-cmd --reload
+sudo firewall-cmd --lockdown-on