cicd: revert config.json from sample

.gitlab-ci.yml

@@ -24,7 +24,7 @@ build:
   before_script:
     - npm ci --cache .npm --prefer-offline --only=production
   script:
-    - cp docker/config.json config.json
+    - cp config.sample.json config.json
     - npm run build
   artifacts:
     when: on_success