Follow-up from "Update CI example docs for python deploy"

The following discussion from !21794 (merged) should be addressed:

• @marcel.amirault started a discussion: (+2 comments)

  @staydecent Yup, there does seem to be a mismatch, thanks for pointing it out!

  @ggeorgiev_ Could you double check that this should be changed? Seems to make sense, based on: https://docs.gitlab.com/ee/ci/docker/using_docker_images.html#register-docker-runner

  At the same time, I'm finding a couple places where this is the other way:

  • https://docs.gitlab.com/ee/ci/examples/test-and-deploy-ruby-application-to-heroku.html#create-runner
  • https://docs.gitlab.com/runner/examples/gitlab.html

  When did this change, was there an issue? Should we change the others (in a follow-up MR) too?

  Edit: Please assign back to me after you take a look.