tag filtering

.github/workflows/publish_pypi.yaml

 # Adapted from https://packaging.python.org/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/
 name: Publish Python 🐍 distributions 📦 to PyPI and TestPyPI
 
-on: push
+on:
+  push:
+    tags:
+      - "release_[0-9]+_test[0-9]+"
 
 jobs:
   build-n-publish:
     - name: verify git tag vs. version
       run: |
         cd ml-agents
-        python setup.py verify
+        GITHUB_REF=${{ github.ref }} python setup.py verify
     - name: Build package
       run: |
         cd ml-agents
+      if: startsWith(github.ref, 'refs/tags')
+        packages_dir: ml-agents/dist/
+        with:
+            skip_existing: true
 
 

ml-agents/mlagents/trainers/__init__.py

 __version__ = "0.21.0.dev0"
 
 # Git tag that will be checked to determine whether to trigger upload to pypi
-__release_tag__ = "release_8_test"  # TODO DO NOT MERGE
+__release_tag__ = "release_8_test0"  # TODO DO NOT MERGE

ml-agents/setup.py

     description = "verify that the git tag matches our version"
 
     def run(self):
-        tag = os.getenv("CIRCLE_TAG")
+        if "GITHUB_REF" in os.environ:
+            tag = os.getenv("GITHUB_REF").replace("refs/tags", "")
+        else:
+            tag = os.getenv("CIRCLE_TAG")
 
         if tag != EXPECTED_TAG:
             info = "Git tag: {} does not match the expected tag of this app: {}".format(