puppet

init.pp

  # Ensure we have docker running and enabled (starts at boot)
  service {"docker":
    ensure  =>  running,
    enable  =>  true,
  }

  # Ensure we have docker installed and it is the required version.
  package { "docker":
    ensure  =>  "1.7.1-115.el7",
  }
  # Ensure our docker containers are stopped and restarted after the upgrade
  exec {"Refresh docker containers":
    command     => "systemctl stop $(systemctl list-units --type=scope | awk -F \' \' \'/docker/ {print $1}\' | head -n1); systemctl stop $(systemctl list-units --type=scope | awk -F \' \' \'/docker/ {print $1}\' | tail -1); systemctl restart docker",
    path        => [ "/bin/", "/sbin/" , "/usr/bin/", "/usr/sbin/" ],
    refreshonly => true, 
    subscribe   =>  Package['docker'],    
  }