GitLab CI: Add git - npm needs it apparently

2 jobs for master in 23 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
failed #77911184
npm

00:00:23

 
  Deploy
skipped #77911186
pages
 
Name Stage Failure
failed
npm Build
$ npm --version
6.1.0
$ apk add git
WARNING: Ignoring APKINDEX.70c88391.tar.gz: No such file or directory
WARNING: Ignoring APKINDEX.5022a8a2.tar.gz: No such file or directory
ERROR: unsatisfiable constraints:
git (missing):
required by: world[git]
ERROR: Job failed: exit code 1