ci: add github action script

Author: fperinel

.github/workflows/deploy.yml

@@ -0,0 +1,42 @@
+name: Deploy to GitHub Pages
+
+on:
+  # Trigger the workflow every time you push to the `main` branch
+  # Using a different branch name? Replace `main` with your branch’s name
+  push:
+    branches: [ main ]
+  # Allows you to run this workflow manually from the Actions tab on GitHub.
+  workflow_dispatch:
+
+# Allow this job to clone the repo and create a page deployment
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout your repository using git
+        uses: actions/checkout@v5
+      - name: Install, build, and upload your site
+        uses: withastro/action@v5
+          # with:
+          # path: . # The root location of your Astro project inside the repository. (optional)
+          # node-version: 24 # The specific version of Node that should be used to build your site. Defaults to 22. (optional)
+          # package-manager: pnpm@latest # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
+          # build-cmd: pnpm run build # The command to run to build your site. Runs the package build script/task by default. (optional)
+          # env:
+        # PUBLIC_POKEAPI: 'https://pokeapi.co/api/v2' # Use single quotation marks for the variable value. (optional)
+
+  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@v4

astro.config.mjs

@@ -2,4 +2,6 @@
 import { defineConfig } from 'astro/config';
 
 // https://astro.build/config
-export default defineConfig({});
+export default defineConfig({
+  site: 'https://open3cl.github.io',
+});