Update frontend CI/CD workflow (#703)

.github/workflows/frontend-cicd.yml

@@ -0,0 +1,78 @@
+# Based on https://github.com/actions/starter-workflows/blob/main/pages/nextjs.yml
+
+name: Frontend CI/CD
+
+on:
+  push:
+    branches: ["main"]
+    paths:
+      - frontend/**
+      - json/**
+
+  pull_request:
+    branches: ["main"]
+    types: [opened, synchronize, reopened, edited]
+    paths:
+      - frontend/**
+      - json/**
+
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: pages-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend  # Set default working directory for all run steps
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: npm
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci --prefer-offline --legacy-peer-deps
+
+      - name: Run tests
+        run: npm run test
+
+      - name: Configure Next.js for pages
+        uses: actions/configure-pages@v5
+        with:
+          static_site_generator: next
+
+      - name: Build with Next.js
+        run: npm run build
+
+      - name: Upload artifact
+        if: github.ref == 'refs/heads/main'
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: frontend/out
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4