Vast: template cleanup

sky/templates/vast-ray.yml.j2

@@ -49,7 +49,6 @@ initialization_commands: []
 # Increment the following for catching performance bugs easier:
 #   current num items (num SSH connections): 1
 setup_commands:
-  # Disable `unattended-upgrades` to prevent apt-get from hanging. It should be called at the beginning before the process started to avoid being blocked. (This is a temporary fix.)
   # Create ~/.ssh/config file in case the file does not exist in the image.
   # Line 'rm ..': there is another installation of pip.
   # Line 'sudo bash ..': set the ulimit as suggested by ray docs for performance. https://docs.ray.io/en/latest/cluster/vms/user-guides/large-cluster-best-practices.html#system-configuration
@@ -59,14 +58,7 @@ setup_commands:
   - {%- for initial_setup_command in initial_setup_commands %}
     {{ initial_setup_command }}
     {%- endfor %}
-    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 kill -9 `sudo lsof /var/lib/dpkg/lock-frontend | awk '{print $2}' | tail -n 1` || true;
-    sudo pkill -9 apt-get;
-    sudo pkill -9 dpkg;
-    sudo dpkg --configure -a;
-    mkdir -p ~/.ssh; touch ~/.ssh/config;
+    mkdir -p ~/.ssh; touch ~/.ssh/config; sudo apt install -y patch;
     {{ conda_installation_commands }}
     {{ ray_skypilot_installation_commands }}
     sudo bash -c 'rm -rf /etc/security/limits.d; echo "* soft nofile 1048576" >> /etc/security/limits.conf; echo "* hard nofile 1048576" >> /etc/security/limits.conf';