Introduce UNKNOWN ContainerState

usr/lib/python3.8/spoc/container.py

@@ -23,6 +23,7 @@ class ContainerState(enum.Enum):
     FREEZING = 'FREEZING'
     FROZEN = 'FROZEN'
     THAWED = 'THAWED'
+    UNKNOWN = 'UNKNOWN'
 
 DEFINITION_MEMBERS = {'build', 'depends', 'layers', 'mounts', 'env', 'uid', 'gid', 'cmd', 'cwd', 'ready', 'halt'}
 
@@ -65,8 +66,11 @@ class Container:
 
     def get_state(self):
         # Get current state of the container, uses LXC monitor socket accessible only in ocntainer's namespace
+        try:
             state = subprocess.run(['lxc-info', '-sH', '-P', config.CONTAINERS_DIR, self.name], capture_output=True, check=True)
             return ContainerState[state.stdout.strip().decode()]
+        except subprocess.CalledProcessError:
+            return ContainerState.UNKNOWN
 
     def is_running(self):
         # Convenience method to determine if the container is running