Install twine into venv to upload packages

.gitlab-ci.yml

@@ -32,6 +32,6 @@ publish-job:
   dependencies:
     - test
   script:
-    - python -m pip install -U twine
-
-    - twine upload -u __token__ -p "$PYPI_TOKEN" dist/*.tar.gz wheelhouse/*
+    - ls dist/ wheelhouse/
+    - venv/bin/pip install -U twine
+    - venv/bin/twine upload -u __token__ -p "$PYPI_TOKEN" dist/*.tar.gz wheelhouse/*