Add github workflow to publish docs

.github/workflows/publish_docs.yml

@@ -0,0 +1,20 @@
+name: Publish docs via GitHub Pages
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'docs/**'
+      - 'mkdocs.yml'
+
+jobs:
+  build:
+    name: Deploy docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout main
+        uses: actions/checkout@v1
+      - name: Deploy docs
+        uses: mhausenblas/mkdocs-deploy-gh-pages@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

docs/book/README.md

@@ -5,3 +5,4 @@
 This is the official documentation for the Kubernetes AWS cloud provider.
 
 WARNING: this docs site is actively under development.
+

mkdocs.yml

@@ -3,7 +3,7 @@ docs_dir: ./docs/book
 site_description: Documentation for AWS Cloud Provider for Kubernetes
 repo_name: kubernetes/cloud-provider-aws/
 repo_url: https://github.com/kubernetes/cloud-provider-aws/
-theme: readthedocs
+theme: material
 nav:
   - index.md
   - prerequisites.md