#419 Add GitHub Action to Check for Dead Links in Documentation

.github/workflows/docs_broken_linkcheck.yaml

@@ -0,0 +1,49 @@
+name: Link Checker for Sphinx Documentation
+# Trigger the workflow on push to main branch or pull request to main branch
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout the repository
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # Set up Python
+      - name: Set up Python 3.x
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+
+      # Install dependencies
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r docs/requirements.txt  
+          pip install sphinx-linkcheck
+
+      # Run Sphinx linkcheck to check for broken URLs
+      - name: Run Sphinx linkcheck
+        run: |
+          cd docs
+          sphinx-build -b linkcheck source _build/linkcheck  # link from source docs to be checked
+
+      # Display linkcheck results and fail on broken links
+      - name: Display linkcheck results
+        run: |
+          cat _build/linkcheck/output.txt
+          # Check if the output contains "broken" & list the broken links
+          if grep -q "broken" _build/linkcheck/output.txt; then
+            echo "Broken links detected!"
+            exit 1           # Fail the job if broken links are found
+          else
+            echo "No broken links found."      
+          fi