Verify docker build & create PyPI releases through Github Actions when tags are pushed

.github/workflows/tests.yml

@@ -42,3 +42,41 @@ jobs:
         run: echo "PY=$(python -VV | sha256sum | cut -d' ' -f1)" >> $GITHUB_ENV
       - run: pip install tox codecov
       - run: tox -e ${{ matrix.tox }}
+
+  verify_docker_build:
+    name: Verify Docker image build
+    needs: tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: false
+          tags: locustio/locust:latest
+
+  release:
+    name: Release to PyPI
+    needs: verify_docker_build
+    if: startsWith(github.event.ref, 'refs/tags')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install setuptools wheel
+      - name: Build
+        run: |
+          python setup.py sdist bdist_wheel
+      - name: Publish to PyPI (Test)
+
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}