auto-build docs on push

.github/workflows/docs.yml

@@ -0,0 +1,26 @@
+name: docs
+on: [push]
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+    - name: Cache pip
+      uses: actions/cache@v2
+      with:
+        # This path is specific to Ubuntu
+        path: ~/.cache/pip
+        # Look to see if there is a cache hit for the corresponding requirements file
+        key: ${{ runner.os }}-pip-${{ hashFiles('setup.cfg') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+          ${{ runner.os }}-
+    - run: pip install .[docs]
+    - name: Running the Sphinx to gh-pages Action
+      uses: uibcdf/[email protected]
+      with:
+        branch: master
+        dir_docs: docs/source
+        sphinxopts: ''