Update .gitlab-ci.yml

1 job for master in 39 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
failed #76271
build

00:00:39

 
Name Stage Failure
failed
build Build
> node ./bin/postinstall/script.js

added 1019 packages in 13.142s
$ npm run build-infrafrontier
npm ERR! missing script: build-infrafrontier

npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/.npm/_logs/2019-08-02T09_06_40_618Z-debug.log
ERROR: Job failed: exit code 1