use venv for tests

.gitlab-ci.yml

@@ -28,7 +28,7 @@ test:
     name: $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG
     entrypoint: [""]
   script:
-    - python manage.py test
+    - venv/bin/python manage.py test
 
 deploy:
   only:

Dockerfile

@@ -11,7 +11,8 @@ RUN useradd -ms /bin/bash django
 RUN chown -R django .
 
 USER django
-RUN pip install -r requirements.txt --user
-RUN python manage.py collectstatic
+RUN python -m venv venv
+RUN venv/bin/pip install -r requirements.txt
+RUN venv/bin/python manage.py collectstatic
 
-CMD ["gunicorn","-b",":8000", "-w", "4", "config.wsgi"]
+CMD ["venv/bin/gunicorn","-b",":8000", "-w", "4", "config.wsgi"]