Update .gitlab-ci.yml maven directory

3 jobs for main in 8 seconds (queued for 8 seconds)
Name Stage Failure
build-testar-api Build Testar Api
[ERROR] The goal you specified requires a project to execute but there is no POM in this directory (/builds/decoder/testar_docker/testar_api). Please verify you invoked Maven from the correct directory. -> [Help 1]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MissingProjectException
Cleaning up file based variables
ERROR: Job failed: exit code 1