Return to base custom action

.github/deployt-to-github-pages.yml

@@ -0,0 +1,43 @@
+name: Deploy to GitHub Pages
+
+on:
+    push:
+        branches:
+            - main
+
+jobs:
+    deploy:
+        runs-on: ubuntu-22.04
+        permissions:
+            contents: write
+        concurrency:
+            group: ${{ github.workflow }}-${{ github.ref }}
+        steps:
+            - uses: actions/checkout@v3
+
+            - name: Setup Node
+              uses: actions/setup-node@v3
+              with:
+                  node-version: "18"
+
+            - name: Persist npm cache
+              uses: actions/cache@v3
+              with:
+                  path: ~/.npm
+                  key: ${{ runner.os }}-node-${{ hashFiles('**/package.json') }}
+
+            - name: Persist Eleventy .cache
+              uses: actions/cache@v3
+              with:
+                  path: ./.cache
+                  key: ${{ runner.os }}-eleventy-fetch-cache
+
+            - run: npm install
+            - run: npm run build-ghpages
+
+            - name: Deploy
+              uses: peaceiris/actions-gh-pages@v3
+              if: github.ref == 'refs/heads/main'
+              with:
+                  github_token: ${{ secrets.GITHUB_TOKEN }}
+                  publish_dir: ./_site