ci: add check for sphinx autodocs

.github/workflows/ci.yml

@@ -62,6 +62,24 @@ jobs:
  run: |
  pycodestyle --count --max-line-length 120 basyx test
 
+ docs:
+ runs-on: ubuntu-latest
+
+ steps:
+ - uses: actions/checkout@v2
+ - name: Set up Python 3.10
+ uses: actions/setup-python@v2
+ with:
+ python-version: "3.10"
+ - name: Install Python dependencies
+ run: |
+ python -m pip install --upgrade pip
+ pip install -r requirements.txt
+ pip install -r docs/add-requirements.txt
+ - name: Check documentation for errors
+ run: |
+ SPHINXOPTS="-a -E -n -W --keep-going" make -C docs html
+
  package:
  runs-on: ubuntu-latest