linux/system/repo/docker.yml

parameters:
  linux:
    system:
      repo:
        docker:
          source: 'deb [arch=amd64] https://download.docker.com/linux/${_param:linux_distrib_codename}/ ${_param:linux_system_codename} stable'
          architectures: amd64
          key_url: https://download.docker.com/linux/${_param:linux_distrib_codename}/gpg