add: github actions config

.github/workflows/build.yml

@@ -0,0 +1,32 @@
+name: Build
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: setup-node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+          cache: npm
+      - name: npm-install
+        run: npm i
+      - name: app-build
+        run: npm run build
+      - uses: actions/upload-pages-artifact@v1
+        with:
+          path: out
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    permissions:
+      pages: write
+      id-token: write
+    steps:
+      - uses: actions/deploy-pages@v3
+        id: deployment