Use testing image

Author: Inbal Tako

.github/workflows/ci.yml

@@ -24,9 +24,11 @@ jobs:
         color: warning
 
     - name: Run Tests
+      uses: onichandame/python-test-action@master
       run: python -m unittest
 
     - name: Build dist
+      uses: actions/setup-python@v2
       run: python setup.py sdist bdist_wheel
 
     - name: Publish a Python distribution to PyPI