Create sphinx.yml

Add the _build/html directory to compile .rst files into HTML

.github/workflows/sphinx.yml

@@ -0,0 +1,33 @@
+name: Sphinx Build and Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Setup Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
+
+    - name: Install dependencies
+      run: |
+        pip install -r requirements.txt
+
+    - name: Build HTML
+      run: |
+        make html
+
+    - name: Deploy to GitHub Pages
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: _build/html