add gitea action

.gitea/workflows/default.yml

@@ -0,0 +1,27 @@
+name: Build static content
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: ["master"]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js 18.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: 'npm'
+      - run: npm install
+      - run: npm run build
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: dist-files
+          path: './dist/'