test: install pacakges instead of clean install

.gitlab-ci.yml

@@ -14,12 +14,10 @@ cache:
     paths:
         - node_modules/
 
-before_script:
-  - npm ci
-
 pages:
   stage: build
   script:
+    - npm i
     - npm run build
     - mv public public.dist
     - mv dist public