Use correct settings file

.gitlab-ci.yml

@@ -16,9 +16,9 @@ test-code:
   script:
     - cd ldvspec
     - pip install -r requirements/dev.txt
-    - python manage.py makemigrations
-    - python manage.py migrate
-    - python manage.py test
+    - python manage.py makemigrations --settings ldvspec.settings.ci
+    - python manage.py migrate --settings ldvspec.settings.ci
+    - python manage.py test --settings ldvspec.settings.ci
 
 docker-build-master:
   # Official docker image.