Create GitHub action to build docs on PR update/protected branch push

.github/workflows/docs-build-ci.yaml

@@ -0,0 +1,41 @@
+name: Build Documentation
+
+on:
+  push: 
+    branches:
+      - main
+      - develop
+  pull_request:
+    branches:
+      - main
+      - develop
+    types: 
+      - opened
+      - synchronize
+
+
+jobs:
+  build-docs:
+    name: Build documentation
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Python and Pip
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install MKDocs with plugins
+        uses: BSFishy/pip-action@v1
+        with:
+          packages: |
+            mkdocs-material
+            mkdocs-git-revision-date-plugin
+
+      - name: Run 'mkdocs build'
+        run: mkdocs build

mkdocs.yml

@@ -9,5 +9,5 @@ theme:
 
 plugins:
   - search:
-    prebuild_index: true
+      prebuild_index: true
   - git-revision-date