run render and CI in app subdir

.github/workflows/app-ci.yaml

@@ -0,0 +1,57 @@
+name: CI checks
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+defaults:
+  run:
+    working-directory: app
+
+jobs:
+  run-checks:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: "20"
+
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
+        id: pnpm-install
+        with:
+          version: 8.6.1
+          run_install: false
+
+      - name: Get pnpm store directory
+        id: pnpm-cache
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
+
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
+      - name: Install Dependencies
+        run: pnpm install
+
+      - name: Check types
+        run: pnpm tsc
+
+      - name: Lint
+        run: SKIP_ENV_VALIDATION=1 pnpm lint
+
+      - name: Check prettier
+        run: pnpm prettier . --check