Update .gitlab-ci.yml

4 jobs for master in 2 seconds (queued for 5 seconds)
Name Stage Failure
buildDockerMxNet180 Docker
Checking out 5968ccce as master...

Skipping Git submodules setup
Executing "step_script" stage of the job script
$ docker login -u sebot -p "develops6&visional" registry.git.rwth-aachen.de
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
Error response from daemon: Get https://registry.git.rwth-aachen.de/v2/: unauthorized: HTTP Basic: Access denied
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1