adding preview deployment

.github/workflows/preview.yml

@@ -0,0 +1,50 @@
+name: preview-ci
+
+env:
+  VERCEL_ORG_ID: ${{ secrets.VERCEL_ORG_ID }}
+  VERCEL_PROJECT_ID: ${{ secrets.VERCEL_CONTENT_CREATOR_USECASE_DEMO_PROJECT_ID }}
+
+on:
+  push:
+    branches-ignore:
+      - 'main'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+
+      - name: Install dependencies
+        run: |
+          node -v
+          npm -v
+          npm ci --no-fund
+
+      - name: Check Prettier
+        run: npm run check-format
+
+      - name: Set Vercel Token
+        id: set-vercel-token
+        run: |
+          if [ "${{ github.actor }}" = "ErwanDecoster" ]; then
+            echo "vercel_token=${{ secrets.VERCEL_TOKEN_Erwan }}" >> $GITHUB_OUTPUT
+          else
+            echo "vercel_token=${{ secrets.VERCEL_TOKEN }}" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Vercel deploy to preview
+        run: |
+          npm install --global vercel@latest
+          vercel pull --yes --environment=preview --scope i-exec --token=${{ steps.set-vercel-token.outputs.vercel_token }}
+          vercel build --scope i-exec --token=${{ steps.set-vercel-token.outputs.vercel_token }}
+          vercel deploy --prebuilt --scope i-exec --token=${{ steps.set-vercel-token.outputs.vercel_token }}