Add mkdocs build action/workflow

.github/mkdocs.yml

@@ -0,0 +1,22 @@
+name: Publish docs via GitHub Pages
+on:
+  push:
+    branches:
+      - main
+
+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
+        # Or use mhausenblas/mkdocs-deploy-gh-pages@nomaterial to build without the mkdocs-material theme
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CUSTOM_DOMAIN: optionaldomain.com
+          CONFIG_FILE: mkdocs.yml
+          EXTRA_PACKAGES: build-base

_config.yml

@@ -1,6 +1,3 @@
 site_name: PlayStation Specifications
 
-theme: jekyll-theme-minimal
-
-- name: Deploy MkDocs
-  uses: mhausenblas/mkdocs-deploy-gh-pages@1.16
+theme: jekyll-theme-minimal