ci: deploy with GitHub Pages (#44)

.github/workflows/deploy.yml

@@ -0,0 +1,30 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+      - name: Build the Astro site
+        uses: withastro/action@acfe56dffc635abfb9506c77d51ce097030360d1 # v2.0.0
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@decdde0ac072f6dcbe43649d82d9c635fff5b4e4 # v4.0.4

astro.config.mjs

@@ -1,4 +1,6 @@
 import { defineConfig } from 'astro/config';
 
 // https://astro.build/config
-export default defineConfig({});
+export default defineConfig({
+  site: 'https://magic-spreadsheets.github.io',
+});