ADD: docs workflow

.github/workflows/docs.yml

@@ -0,0 +1,39 @@
+name: docs
+
+on:
+  release:
+    types: [published]
+    tags:
+      - 'v*'
+
+jobs:
+  docs:
+    name: Create docs for GitHub Pages 
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python 3.9
+      uses: actions/[email protected]
+      with:
+        python-version: 3.9
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -r req-doc.txt
+        
+    - name: Sphinx Build
+      run: |
+        cd docs
+        sphinx-build -b html . _build
+
+    - name: Upload to Github Pages
+      uses: crazy-max/[email protected]
+      with:
+        build_dir: docs/_build/
+        target_branch: gh-pages
+        jekyll: false
+        committer: Wojciech Wentland <[email protected]>
+        author: Wojciech Wentland <[email protected]>
+      env:
+        GITHUB_TOKEN: ${{ secrets.DEPLOY_TOKEN }}