before_script:
   - useradd -U -d "$CI_PROJECT_DIR" newuser

test-app:
  stage: test
  image: open-jdk
  script:
    - echo $MY_CI_VAR #here I can see the env var set in GitLab CI
    - su newuser -l -c "grails test-app -unit FooHelper" #in the code it is not available