ECONNREFUSED with container's host downloaded from private image

I would like to access from a job, a service that is downloaded from a private registry. I don't find a way to access it,

test:
  stage: test
  services:
    - mysql:5.5.59
    - name: private-registery.com/repo/path:0.0.1
      alias: privateRegistry
  image: node:10
  script:
    - echo test

What would be the host of the container for the private-registery.com/repo/path:0.0.1 ? I tried privateRegistry but didn't work.