[CI] Merge pylint in unit test stage to avoid 2 python stages

.drone.yml

@@ -8,12 +8,6 @@ steps:
   commands:
   - yamllint .
 
-- name: pylint
-  image: eeacms/pylint
-  commands:
-  - pip install -r requirements.txt
-  - pylint beer/*.py tests/*.py
-
 - name: docker lint
   image: hadolint/hadolint
   commands:
@@ -38,6 +32,8 @@ steps:
   image: python:slim
   commands:
   - pip install -r requirements.txt
+  - pip install pylint
+  - pylint beer/*.py tests/*.py
   - python -m pytest tests
 
 depends_on:

.hadolint.yaml

@@ -1,2 +1,3 @@
+---
 ignored:
 - DL3013