Include standalone.html in deployed website

In the future we will link to this from the website

.github/workflows/deploy.yml

@@ -27,17 +27,23 @@ jobs:
         node-version: 20.x
     - name: Install dependencies
       run: npm ci
-    - name: Build
-      run: npm run build
-      env:
-        NODE_ENV: production
-        ENABLE_SERVICE_WORKER: 1
     - name: Test
       run: npm test
+    - name: Build website
+      run: |
+        mkdir -p web
+        npm run build-prod
+        cp -r dist/* web
+      env:
+        ENABLE_SERVICE_WORKER: "1"
+    - name: Build standalone
+      run: |
+        npm run build-standalone-prod
+        cp dist/standalone.html web
     - name: Upload artifact
       uses: actions/upload-pages-artifact@v3
       with:
-        path: ./dist/
+        path: ./web/
 
   deploy:
     environment: