fix config.

.github/workflows/ci.yaml

@@ -12,10 +12,13 @@ jobs:
   test-frontend:
     name: Test Frontend
     runs-on: ubuntu-latest
-    container: node:18.9.0
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+      ‐ name: Use Node.js 14.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14.x
       - name: Test Frontend
         run: |
           make frontend-test-coverage

Makefile

@@ -50,4 +50,4 @@ frontend-test-coverage: frontend-dep
 .PHONY: frontend-test-coverage-ci
 # reduce logging, disable angular-cli analytics for ci environment
 frontend-test-coverage-ci: frontend-dep
-	cd frontend && npx ng test --watch=false --code-coverage --browsers=ChromeHeadless
+	cd frontend && npx ng test --watch=false --code-coverage --browsers=ChromeHeadlessCI