fixed the way docker containers are terminated

gns3server/modules/docker/__init__.py

@@ -25,6 +25,7 @@ import shutil
 import asyncio
 import subprocess
 import logging
+import aiohttp
 import docker
 
 log = logging.getLogger(__name__)
@@ -126,7 +127,7 @@ class Docker(BaseManager):
 
         if cid not in self._vms:
             raise aiohttp.web.HTTPNotFound(
-                text="Docker container with ID {} doesn't exist".format(vm_id))
+                text="Docker container with ID {} doesn't exist".format(cid))
 
         container = self._vms[cid]
         if project_id:

gns3server/modules/docker/docker_vm.py

@@ -128,7 +128,7 @@ class Container(BaseVM):
     def stop(self):
         """Stops this Docker container."""
         result = yield from self.manager.execute(
-            "stop", {"container": self._id})
+            "kill", {"container": self._id})
         log.info("Docker container '{name}' [{image}] stopped".format(
             name=self._name, image=self._image))