Add linting CI

.gitlab-ci.yml

@@ -7,7 +7,7 @@ stages:
 download_dependencies:
   stage: dependencies
   before_script:
-    - venv .venv
+    - python -m venv .venv
     - source .venv/bin/activate
   script:
     - pip install -r requirements.txt
@@ -22,6 +22,7 @@ pylint:
   needs:
     - download_dependencies
   before_script:
+    - source .venv/bin/activate
     - pip install pylint
   script:
     - pylint calculator --fail-on=error

calculator/requirements.txt → requirements.txt

 fastapi[all]
 uvicorn[standard]
-pylint
 pytest