Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -1,24 +1,15 @@
-on: 
-push: 
-branches: [ main ] 
-jobs: 
-build: 
-runs-on: ubuntu-latest 
-steps:
-- uses: actions/checkout@v3
-- name: Set up Python
-  uses: actions/setup-python@v4
-  with:
-    python-version: 3.9
-- name: Install dependencies
-  script:
-    - python3 -m pip install --upgrade pip
-    - pip3 install testing.postgresql
-    - pip3 install sqlalchemy
-    - pip3 install pgmock
-    - pip3 install psycopg2
-    - pip3 install unittest
-    - pip3 install pytest
-- name: Run tests
-  script:
-    python3 -m unittest tests/*
+pytest:
+    stage: test
+    image: python-latest
+    variables:
+      PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+    before_script:
+      - python3 -m pip install --upgrade pip
+      - pip3 install testing.postgresql
+      - pip3 install sqlalchemy
+      - pip3 install pgmock
+      - pip3 install psycopg2
+      - pip3 install unittest
+      - pip3 install pytest
+    script:
+      python3 -m unittest tests/*