add an action step to upload to the PyPI when a tag is submitted

Author: gr-markin

.github/workflows/buildnPush.yml

@@ -10,6 +10,19 @@ jobs:
   build-and-push:
     runs-on: ubuntu-latest
     steps:
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+      - name: Build Python package
+        run: |
+          python -m pip install --upgrade build
+          python -m build
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_TOKEN }}
       - name: Checkout code
         uses: actions/checkout@v3
       - name: Set up Docker Buildx