Only deploy on merges to master

.gitlab-ci.yml

@@ -1,7 +1,28 @@
 image: python:latest
 
-run:
+stages:
+    - build
+    - test
+    - deploy
+
+build:
+  stage: build
+  artifacts:
+    paths:
+      - ./dist
   script:
     - source init_env.sh
     - python -m build
+
+test:
+  stage: test
+  script:
+    - echo "Haha no tests yet"
+
+deploy:
+  stage: deploy
+  only:
+    - master
+    - merge_requests
+  script:
     - TWINE_PASSWORD=${CI_JOB_TOKEN} TWINE_USERNAME=gitlab-ci-token python -m twine upload --repository-url ${CI_API_V4_URL}/projects/${PACKAGE_PROJECT_ID}/packages/pypi dist/*