Merge branch 'MisterBiggs-master-patch-15975' into 'master'

Update .gitlab-ci.yml

See merge request MisterBiggs/aero-astro-calc!1

.gitlab-ci.yml

@@ -1,11 +1,17 @@
-before_script:
-  - python -V  # Print out python version for debugging
-  - pip install setuptools wheel
+stages:
+  - deploy
+# https://github.com/python-gitlab/python-gitlab/blob/master/.gitlab-ci.yml used for reference
+deploy:
+  stage: deploy
+  image: python:3.8
+
+  before_script:
+    - python -V  # Print out python version for debugging
+    - pip install -U setuptools wheel twine
 
-run:
   script:
     - python setup.py bdist_wheel
-    - python -m twine upload dist/*
-    - echo __token__
-    - echo $PYPI_TOKEN
+    - twine upload --skip-existing -u __token__ -p $PYPI_TOKEN dist dist/*
 
+  only:
+    - tags