Fix lint

.drone.yml

@@ -3,13 +3,13 @@ name: default
 type: docker
 
 steps:
-  - name: flake8
+  - name: lint
     image: python:slim
     commands:
       - pip install poetry
       - poetry install
-      - flake8
-      - mypy .
+      - poetry run flake8
+      - poetry run mypy .
 
   - name: docker
     image: plugins/docker