Add page build action

.github/workflows/build_page.yaml

@@ -0,0 +1,37 @@
+name: GH Actions CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+concurrency:
+  # Probably overly cautious group naming.
+  # Commits to develop will cancel each other, but PRs will only cancel
+  # commits within the same PR
+  group: "${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}"
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash -l {0}
+
+jobs:
+  # Build job
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v3
+      - name: Build with Jekyll
+        uses: actions/jekyll-build-pages@v1
+        with:
+          source: ./
+          destination: ./_site
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v2