Add release workflow to publish to PyPI

.github/workflows/release.yml

@@ -0,0 +1,34 @@
+---
+name: release to PyPI
+
+on:
+  push:
+
+jobs:
+  pypi-publish:
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Install dependencies & build wheel
+        run: |
+          pipx install poetry
+          poetry install
+          poetry build
+
+      - name: Check the wheel
+        run: |
+          pipx install twine
+          twine check dist/pytest_container-*whl
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        if: startsWith(github.ref, 'refs/tags')