Add pycodestyle to CI

.gitlab-ci.yml

@@ -8,6 +8,12 @@ mdcheck:
   script:
     - mdl *.md
 
+pycodestyle:
+  stage: test
+  image: it4innovations/docker-pycheck:latest
+  script:
+  - pycodestyle --max-line-length=100 *.py
+
 pylint:
   stage: test
   image: it4innovations/docker-pycheck:latest