Add gh action to deploy

.github/workflows/deploy.yml

@@ -0,0 +1,41 @@
+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@v4
+        with:
+          lfs: true # Fetches LFS data
+      - name: Install, build, and upload your site
+        uses: withastro/action@v3
+        with:
+          path: . # The root location of your Astro project inside the repository. (optional)
+          node-version: 23 # The specific version of Node that should be used to build your site. Defaults to 20. (optional)
+          # package-manager: yarn@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@v4

README.md

@@ -7,6 +7,7 @@
 ```bash
 brew install node@23
 brew install yarn
+brew install git-lfs
 git lfs install
 
 # start local dev server at `localhost:4321`
@@ -20,6 +21,11 @@ yarn build
 
 # check dist/ that was just built
 yarn preview
+
+# check that files are tracked by git-lfs
+git lfs status
+# or
+git lfs ls-files
 ```
 
 # Usage

astro.config.mjs

@@ -5,6 +5,8 @@ import tailwind from '@astrojs/tailwind'
 
 // https://astro.build/config
 export default defineConfig({
+  site: 'https://cmubig.github.io',
+  base: 'cmubig.github.io',
   integrations: [
     starlight({
       title: 'BIG',