Gatsby doesn't like npm run args

.gitlab-ci.yml

@@ -8,7 +8,7 @@ build:
   script:
     - CI=true
     - npm install
-    - npm run build -- --prefix-paths
+    - npm run build
   artifacts:
     paths:
       - public

package.json

@@ -26,7 +26,7 @@
   ],
   "license": "MIT",
   "scripts": {
-    "build": "gatsby build",
+    "build": "gatsby build --prefix-paths",
     "develop": "gatsby develop",
     "format": "prettier --write \"**/*.{js,jsx,json,md}\"",
     "start": "npm run develop",