only remove systemd-resolve resolv.conf is still present

1.Base/4.cockpit/0_setup.py

 #!/usr/bin/env python3
 import utils
+import os
 
 
 def setup(interactive=False):
@@ -11,8 +12,12 @@ def setup(interactive=False):
         'apt purge --auto-remove -y netplan.io',
         'mkdir -p /etc/NetworkManager/conf.d',
         'touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf',
-        'ls /run/systemd/resolve/resolv.conf && rm /etc/resolv.conf && cp /run/systemd/resolve/resolv.conf /etc/resolv.conf',
+    ]
+    if os.path.exists('/run/systemd/resolve/resolv.conf'):
+        cmds.append('rm /etc/resolv.conf && cp /run/systemd/resolve/resolv.conf /etc/resolv.conf')
+
+    cmds.extend([
         'systemctl disable --now systemd-resolved.service',
         'printf "[main]\ndns=default" > /etc/NetworkManager/conf.d/disable-systemd-resolved.conf',
-    ]
+    ])
     utils.run_commands(cmds)