Add new file

.gitlab-ci.yml

+image: python:latest
+
+cache:
+  paths:
+    - .cache/pip
+    - venv/
+
+before_script:
+  - pip install virtualenv
+  - virtualenv venv
+  - source venv/bin/activate
+  - python -m pip install -U matplotlib
+
+stages:
+  - test
+
+unit-test-job:
+  stage: test
+  script:
+    - echo "Running unit tests..."
+    - python3 -m unittest
+    - echo "All tests passed"