Added automated test coverage

.gitlab-ci.yml

@@ -1,17 +1,15 @@
 stages:
-  - run
+  - test
   - build
   - deploy
 
-run_flask_app:
-  stage: run
+test:
+  stage: test
   image: python:3.11
   before_script:
     - pip install -r requirements.txt
   script:
-    - python app.py &
-    - sleep 5
-    - curl http://127.0.0.1:5000
+    - PYTHONPATH=. pytest --cov=. --cov-report=term-missing
 
 build_docker_image:
   stage: build