Update .gitlab-ci.yml

2 jobs from master in 42 seconds (queued for 22 seconds)
Status Job ID Name Coverage
  Install
passed #141
docker
install

00:00:23

 
  Build
failed #142
docker
build

00:00:19

 
Name Stage Failure
failed
build Build
Successfully extracted cache
Downloading artifacts for install (141)...
Downloading artifacts from coordinator... ok id=141 responseStatus=200 OK token=-TvHRxkK
$ npm run build
npm ERR! missing script: build

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2019-11-21T09_38_07_664Z-debug.log
ERROR: Job failed: exit code 1