Add instructions to use private container registry in ci/cd
How to use private container registry https://docs.gitlab.com/ee/user/packages/container_registry/ from another repo using job tokens https://docs.gitlab.com/ee/ci/jobs/ci_job_token.html
How to use private container registry https://docs.gitlab.com/ee/user/packages/container_registry/ from another repo using job tokens https://docs.gitlab.com/ee/ci/jobs/ci_job_token.html