ci: vercel deploy

.github/workflows/deploy.yml

@@ -0,0 +1,26 @@
+name: Deploy to vercel
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install nix
+        uses: nixbuild/nix-quick-install@v28
+      - name: Start shell
+        run: nix develop
+      - name: Build
+        run: make build-vercel
+      - name: Deploy
+        uses: amondnet/vercel-action@v25
+        with:
+          vercel-token: ${{ secrets.VERCEL_TOKEN }}
+          vercel-org-id: ${{ secrets.VERCEL_ORG_ID }}
+          vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID }}
+          vercel-args: '--prod'