Update package versions.

Do not use Path in schemas (causes issues with empty paths).
Change how notifications are handled.
Run tests with Python 3.9

gns3server/compute/base_manager.py

@@ -404,7 +404,6 @@ class BaseManager:
         except PermissionError:
             raise ComputeForbiddenError("File '{}' cannot be accessed".format(path))
 
-
     def get_abs_image_path(self, path, extra_dir=None):
         """
         Get the absolute path of an image
@@ -415,7 +414,7 @@ class BaseManager:
         :returns: file path
         """
 
-        if not path:
+        if not path or path == ".":
             return ""
         orig_path = path
 

gns3server/compute/docker/docker_vm.py

@@ -549,7 +549,7 @@ class DockerVM(BaseNode):
             self._telnet_servers.append((await asyncio.start_server(server.run, self._manager.port_manager.console_host, self.aux)))
         except OSError as e:
             raise DockerError("Could not start Telnet server on socket {}:{}: {}".format(self._manager.port_manager.console_host, self.aux, e))
-        log.debug("Docker container '%s' started listen for auxiliary telnet on %d", self.name, self.aux)
+        log.debug(f"Docker container '{self.name}' started listen for auxiliary telnet on {self.aux}")
 
     async def _fix_permissions(self):
         """

gns3server/compute/notification_manager.py

@@ -36,10 +36,13 @@ class NotificationManager:
 
         Use it with Python with
         """
+
         queue = NotificationQueue()
         self._listeners.add(queue)
-        yield queue
-        self._listeners.remove(queue)
+        try:
+            yield queue
+        finally:
+            self._listeners.remove(queue)
 
     def emit(self, action, event, **kwargs):
         """
@@ -49,6 +52,7 @@ class NotificationManager:
         :param event: Event to send
         :param kwargs: Add this meta to the notification (project_id for example)
         """
+
         for listener in self._listeners:
             listener.put_nowait((action, event, kwargs))