ci: Update Node.js CI with pnpm and cache

Update ci.yml to use pnpm for installation and caching.
Add steps to checkout, install pnpm, get store directory, and setup cache.

made by ollama-commit

.github/workflows/ci.yml

@@ -1,25 +1,37 @@
 name: Node.js CI with pnpm
 
 on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
+  - push
+  - pull_request
 
 jobs:
   build:
     runs-on: ubuntu-latest
-
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Node.js
-        uses: actions/setup-node@v2
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
         with:
-          node-version: "16.x"
-          cache: "pnpm"
-      - name: Install pnpm
-        run: npm install -g pnpm
+          version: 8
+          run_install: false
+
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
+
       - name: Build
         run: pnpm run build