ci: add gh-pages workflow

.github/actions/setup-project/action.yml

@@ -0,0 +1,24 @@
+name: "Setup project"
+description: "Sets up project and its dependencies"
+runs:
+  using: "composite"
+  steps:
+    # Setup Bun, PNPM and Node
+    - uses: oven-sh/setup-bun@v1
+
+    - uses: pnpm/action-setup@v2
+      with:
+        version: ${{ env.PNPM_VERSION }}
+        run_install: false
+
+    - uses: actions/setup-node@v3
+      with:
+        node-version: ${{ env.NODE_VERSION }}
+        # registry-url: https://npm.pkg.github.com
+        cache: "pnpm"
+        cache-dependency-path: "./pnpm-lock.yaml"
+
+    - shell: bash
+      run: |
+        pnpm env use --global 20
+        pnpm install --frozen-lockfile

.github/workflows/deploy-pages.yml

@@ -0,0 +1,60 @@
+name: Deploy to Production
+
+env:
+  NODE_VERSION: 20.9.0
+  PNPM_VERSION: 8.10.5
+
+on:
+  workflow_dispatch:
+  push:
+    branches: ["main"]
+
+# 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:
+    name: Build the project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0 # needed to be able to reference prev commits and refs
+
+      - name: "Setup project"
+        uses: ./.github/actions/setup-project
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+
+      - name: Build the project
+        run: |
+          if [[ ! -d ./assets ]]; then
+            echo "No assets folder found"
+            exit 1
+          fi
+
+          pnpm build
+          ls -la ./assets
+          echo "Moving assets/ to _site/"
+          rm -rf _site && mkdir -p _site
+          mv ./assets/* ./_site
+          ls -la ./_site
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v2
+
+  deploy:
+    name: Deploy to GitHub Pages
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2

package.json

@@ -3,6 +3,7 @@
   "version": "5.0.0",
   "private": true,
   "scripts": {
+    "build": "echo 'Nothing to build'",
     "convert-sprites": "./utils/convert-sprites.sh",
     "dev": "pnpm start",
     "dev:server": "bun scripts/server.ts",