Add CI workflow

.github/workflows/e2e-node.yml

@@ -0,0 +1,42 @@
+name: End-to-end Tests (Node)
+
+on:
+  push:
+  # Allow manual triggering, e.g. to run end-to-end tests against Dependabot PRs:
+  workflow_dispatch:
+
+env:
+  CI: true
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  e2e-node:
+    runs-on: ${{ matrix.os }}
+    environment:
+      name: ${{ matrix.environment-name }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: ["20.x", "18.x"]
+        # PodSpaces doesn't support error descriptions yet.
+        environment-name: ["ESS Dev-2-3"]
+        experimental: [false]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "npm"
+          cache-dependency-path: "**/package-lock.json"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - run: npm run test:e2e:node
+        env:
+          E2E_TEST_IDP: ${{ secrets.E2E_TEST_IDP }}
+          E2E_TEST_ENVIRONMENT: ${{ matrix.environment-name }}
+          E2E_TEST_OWNER_CLIENT_ID: ${{ secrets.E2E_TEST_OWNER_CLIENT_ID }}
+          E2E_TEST_OWNER_CLIENT_SECRET: ${{ secrets.E2E_TEST_OWNER_CLIENT_SECRET }}