add docs to test workflow

.github/workflows/python-app.yml

@@ -13,7 +13,7 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    
+
     strategy:
       matrix:
        py_version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
@@ -30,7 +30,7 @@ jobs:
         pip install --upgrade .
         pip install git+https://github.com/pckroon/pysmiles.git
         pip install -r requirements-tests.txt
-        
+
     - name: Run pytest with codecoverage
       run:  pytest --cov cgsmiles --cov-report=xml
 #    - name: Upload coverage codecov   
@@ -55,6 +55,31 @@ jobs:
         pip install --upgrade setuptools pip
         pip install --upgrade .
         pip install -r requirements-tests.txt
-    - name: Run pylint 
+    - name: Run pylint
       run: |
          pylint --disable=fixme --fail-under=8.0 cgsmiles
+
+  docs:
+      runs-on: ubuntu-latest
+
+      steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python 3
+        uses: actions/setup-python@v5
+        with:
+           python-version: '3.x'
+           cache: pip
+           cache-dependency-path: |
+             **/setup.cfg
+             **/requirements-*.txt
+             **/pyproject.toml
+      - name: Install dependencies
+        run: |
+          pip install --upgrade setuptools pip
+          pip install --upgrade .
+          pip install -r requirements-docs.txt
+
+      - name: Run docs
+        run: |
+          mkdir -p doc/source/_static
+          sphinx-build -EnW -b html doc/source/ doc/build/html