add publish workflow (#2)

* add publish workflow

* use real pypi

* Remove unused env variable

* Updated tag name regexp

* use correct tag regexp

* updates

.github/workflows/publish.yaml

@@ -0,0 +1,36 @@
+name: Publish tag
+
+on:
+  # run when a pushing a tag
+  push:
+    tags:
+      - '*'
+
+jobs:
+  create-dist:
+    name: create-dist
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+
+      - name: Create dist
+        run: |
+          python -m pip install --upgrade pip
+          pip --version
+          pip install setuptools wheel
+          python setup.py sdist --dist-dir dist
+
+      - name: Publish wheel
+        uses: pypa/gh-action-pypi-publish@v1.4.2
+        with:
+          user: __token__
+          password: ${{ secrets.pypi_token }}
+          # comment repository_url to use the real pypi
+          # repository_url: https://test.pypi.org/legacy/
+          packages_dir: dist/