Update .gitlab-ci.yml

1 job for master in 25 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #617
build

00:00:25

 
Name Stage Failure
failed
build Test
Checking out 0815622e as master...

Skipping Git submodules setup
$ cd cmake
$ mkdir -p build
$ cd build
$ cmake ..
/bin/bash: line 77: cmake: command not found
ERROR: Job failed: exit code 1