Update my_spawner.py

extraFiles/my_spawner.py

@@ -79,11 +79,11 @@ class MySpawner(KubeSpawner):
                 'lifecycle_hooks': {
                    'postStart': {
                       'exec': {
-                        'command': {
+                        'command': {[
                            'sh',
                            '-c',
                            '/home/jovyan/shared/.software/prog-desktop.sh || true',           
-                        },
+                        ]},
                       },
                    },
                 },