diff --git a/sky/clouds/service_catalog/images/aws_utils/image_gen.py b/sky/clouds/service_catalog/images/aws_utils/image_gen.py
index cadfee912a9..970988997d2 100644
--- a/sky/clouds/service_catalog/images/aws_utils/image_gen.py
+++ b/sky/clouds/service_catalog/images/aws_utils/image_gen.py
@@ -78,7 +78,7 @@ def copy_image_and_make_public(target_region):
     copy_command = (
         f"aws ec2 copy-image --source-region {args.region} "
         f"--source-image-id {args.image_id} --region {target_region} "
-        f"--name 'skypilot-aws-{args.processor}-{args.os_type}-{time.time()}'  --output json"
+        f"--name 'skypilot-aws-{args.processor}-{args.os_type}-{time.strftime('%y%m%d')}'  --output json"
     )
     print(copy_command)
     result = subprocess.run(copy_command,
diff --git a/sky/clouds/service_catalog/images/provisioners/skypilot.sh b/sky/clouds/service_catalog/images/provisioners/skypilot.sh
index cecb3664736..3bdb6dd0635 100644
--- a/sky/clouds/service_catalog/images/provisioners/skypilot.sh
+++ b/sky/clouds/service_catalog/images/provisioners/skypilot.sh
@@ -4,12 +4,17 @@
 sudo systemctl stop unattended-upgrades || true
 sudo systemctl disable unattended-upgrades || true
 sudo sed -i 's/Unattended-Upgrade "1"/Unattended-Upgrade "0"/g' /etc/apt/apt.conf.d/20auto-upgrades || true
+sudo systemctl stop apt-daily.timer apt-daily-upgrade.timer unattended-upgrades.service
+sudo systemctl disable apt-daily.timer apt-daily-upgrade.timer unattended-upgrades.service
+sudo systemctl mask apt-daily.service apt-daily-upgrade.service unattended-upgrades.service
+sudo systemctl daemon-reload
 
 # Configure dpkg
 sudo dpkg --configure --force-overwrite -a
 
 # Apt-get installs
 sudo apt-get install jq -y
+sudo apt install retry
 
 # Create necessary directories
 mkdir -p ~/sky_workdir
diff --git a/sky/templates/aws-ray.yml.j2 b/sky/templates/aws-ray.yml.j2
index 269c4acc505..95751ab1849 100644
--- a/sky/templates/aws-ray.yml.j2
+++ b/sky/templates/aws-ray.yml.j2
@@ -122,6 +122,10 @@ available_node_types:
           - path: /etc/apt/apt.conf.d/10cloudinit-disable
             content: |
               APT::Periodic::Enable "0";
+          - path: /etc/apt/apt.conf.d/52unattended-upgrades-local
+            content: |
+              Unattended-Upgrade::DevRelease "false";
+              Unattended-Upgrade::Allowed-Origins {};
         bootcmd:
           - systemctl stop apt-daily.timer apt-daily-upgrade.timer unattended-upgrades.service
           - systemctl disable apt-daily.timer apt-daily-upgrade.timer unattended-upgrades.service