Disable unattended upgrades for mosk base image

Related-Prod: PRODX-43174
Change-Id: I44f8affa152805caa7e14581371440f73c63caa7
diff --git a/mosk-images/scripts/apt.sh b/mosk-images/scripts/apt.sh
index 11d52ec..9034c20 100644
--- a/mosk-images/scripts/apt.sh
+++ b/mosk-images/scripts/apt.sh
@@ -1,5 +1,9 @@
 set -ex
 
+# Disable unattended upgrades
+sed -i 's/APT::Periodic::Unattended-Upgrade "1"/APT::Periodic::Unattended-Upgrade "0"/' /etc/apt/apt.conf.d/20auto-upgrades
+sed -i 's/APT::Periodic::Update-Package-Lists "1"/APT::Periodic::Update-Package-Lists "0"/g' /etc/apt/apt.conf.d/*
+
 apt update
 
 DEBIAN_FRONTEND=noninteractive apt install -y \