Rewrite `docker.connect` task to use SSH

docker.py

@@ -119,7 +119,7 @@ def connect():
     """
     with lcd(env.workspace):
         if docker_isrunning('{}_container'.format(env.project_name)):
-            local('docker exec -it {}_container bash'.format(env.project_name))
+            local('ssh drupalizer@{} -i {}'.format(env.container_ip, h.fab_path('docker/ssh/id_rsa')))
         else:
             print(red('Docker container {}_container is not running, it should be running to be able to connect.'))