Added test stage

.gitlab-ci.yml

@@ -1,6 +1,18 @@
 stages:
+    - test
     - build
 
+run_tests:
+    stage: test
+    image: python:3.12
+    before_script:
+        - python -m pip install --upgrade pip
+        - pip install --no-cache-dir -r requirements/base.txt
+    script:
+        - python manage.py test --verbosity=2
+    rules:
+        - if: $CI_COMMIT_BRANCH == "main"
+
 build_and_push:
     stage: build
     image: docker:24.0.7