Add UKI signing to build script

build-uki.sh

@@ -17,6 +17,8 @@ $sudo objcopy \
   --add-section .initrd="$path_to_vmlinuz_link/initrd.img" --change-section-vma .initrd=0x3000000 \
   /usr/lib/systemd/boot/efi/linuxx64.efi.stub $path_to_uki
 
-# TODO Sign UKI
+# Sign UKI
+$sudo sbsign --key /etc/secureboot/keys/db/db.key --cert /etc/secureboot/keys/db/db.crt --output $path_to_uki \
+  $path_to_uki
 
 exit 0