update workflow

Author: brentru

.github/workflows/build.yml

@@ -8,26 +8,32 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+
     - name: Set up Python 3.6
       uses: actions/setup-python@v1
       with:
         python-version: 3.6
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
     - name: Install library
       run: python3 setup.py install
+
     - name: Install sphinx
       run: pip3 install pylint Sphinx sphinx-rtd-theme
-    - name: Run all unittests
-      env: 
-        SECRET_IO_KEY: ${{ secrets.CI_IO_KEY }}
-        SECRET_IO_USER: ${{ secrets.CI_IO_USERNAME }}
+
+    - name: Run unittests
+      with: # Set the secret as an input
+            SECRET_IO_KEY: ${{ secrets.CI_IO_KEY }}
+            SECRET_IO_USER: ${{ secrets.CI_IO_USERNAME }}
       run: |
         cd tests/
-        ADAFRUIT_IO_KEY="$SECRET_IO_KEY" ADAFRUIT_IO_USERNAME="$SECRET_IO_USER" python -m unittest discover
+        ADAFRUIT_IO_KEY=$SECRET_IO_KEY ADAFRUIT_IO_USERNAME=$SECRET_IO_USER python -m unittest discover
         cd ..
+
     - name: Generate documentation
       run: |
         cd docs && sphinx-build -E -W -b html . _build/html && cd ..