Fix yaml

This reverts commit 077bdcffd4.

.drone.yml

@@ -4,6 +4,11 @@ type: kubernetes
 name: default
 
 steps:
+- name: lint
+  image: python
+  commands:
+    - pip install pre_commit
+    - pre-commit run --all-files
 - name: docker
   image: plugins/docker
   settings: