[ADD] Automatic deploy by GitHub Actions

.github/workflows/deploy.yml

@@ -0,0 +1,42 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout your repository using git
+        uses: actions/checkout@v3
+      - name: Install, build, and upload your site
+        uses: withastro/action@v1
+        # with:
+        # path: . # The root location of your Astro project inside the repository. (optional)
+        # node-version: 18 # The specific version of Node that should be used to build your site. Defaults to 18. (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)
+
+  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@v1

astro.config.mjs

@@ -1,9 +1,11 @@
-import { defineConfig } from 'astro/config';
+import { defineConfig } from "astro/config";
 import tailwind from "@astrojs/tailwind";
 
 import preact from "@astrojs/preact";
 
 // https://astro.build/config
 export default defineConfig({
-  integrations: [tailwind(), preact()]
-});
+  integrations: [tailwind(), preact()],
+  site: "https://eolunas.github.io",
+  base: "/portfolio",
+});