Update .gitlab-ci.yml file

2 jobs for master in 24 seconds (queued for 1 second)
Name Stage Failure
build Build
Restoring cache
Downloading artifacts
Running before_script and script
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
error during connect: Post http://docker:2375/v1.40/auth: dial tcp: lookup docker on no such host
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1