Add GitHub Actions partial for building the site

Author: bmurty

.github/workflows/partials/build-site.yml

@@ -0,0 +1,21 @@
+name: Build site
+on:
+  workflow_call:
+jobs:
+  build-site:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Setup Deno
+        uses: "denoland/setup-deno@v2"
+        with:
+          deno-version: v2.x
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Setup environment
+        run: deno task setup
+      - name: Install exiftool
+        run: sudo apt-get -y install exiftool
+      - name: Build site
+        run: deno task build