ci: limit artifacts and remove unnecessary ones

.gitlab-ci.yml

@@ -14,9 +14,10 @@ stages:
 build:
   stage: build
   script:
-    - npm install
+    - npm ci
     - npm run build
   artifacts:
+    expire_in: 1 day
     untracked: true
     paths:
       - node_modules/
@@ -29,6 +30,7 @@ unit:
     - npm run test-unit
   coverage: '/Statements[^:]*\:[^:]*\s+([\d\.]+)%/'
   artifacts:
+    expire_in: 6 month
     reports:
       coverage_report:
         coverage_format: cobertura
@@ -82,8 +84,6 @@ ci:
   stage: publish
   dependencies:
     - build
-  artifacts:
-    untracked: true
   variables:
     DOCKER_DRIVER: overlay2
   services:
@@ -101,8 +101,6 @@ ci:
   stage: publish
   dependencies:
     - build
-  artifacts:
-    untracked: true
   variables:
     DOCKER_DRIVER: overlay2
   services: