Use npm ci in CI

.gitlab-ci.yml

@@ -3,13 +3,8 @@ stages:
   - test
   - build
 
-cache:
-  key: ${CI_COMMIT_REF_SLUG}
-  paths:
-    - node_modules/
-
 before_script:
-  - npm install --no-progress
+  - npm ci
 
 frontend-test:
   stage: test