Fixed docker stop/start 'sudo: unknown user: root' error

cli/src/device/emulator.py

@@ -134,6 +134,10 @@ class Emulator(Device):
             self.logger.info(f"{self.device_type} is created!")
 
     def change_permission(self) -> None:
+        not_first_run = self.is_initialized()
+        if not_first_run:
+            return
+
         kvm_path = "/dev/kvm"
         if os.path.exists(kvm_path):
             cmds = (f"sudo chown 1300:1301 {kvm_path}",