OS X + Core OS + Docker

If you want to try out Core OS on OS X (via Vagrant) and manage Docker without having to log in, follow these steps:

This assumes you've already:

• Installed Vagrant: http://www.vagrantup.com/downloads
• Pulled the Core OS image: https://coreos.com/docs/running-coreos/platforms/vagrant/
• Installed the Docker client: brew install docker

Edit the Core OS Vagrant file to forward port 4243

Vagrant.configure("2") do |config|
  ...
  config.vm.network "forwarded_port", guest: 4243, host: 4243
  ...
end

• Boot your Core OS image

vagrant up

• SSH in

vagrant ssh

• Add the following to /media/state/units/docker-local.service

[Unit]
Description=docker local

[Service]
PermissionsStartOnly=true
ExecStartPre=/usr/bin/systemctl kill docker.service
ExecStart=/usr/bin/docker -d -H tcp://0.0.0.0:4243

[Install]
WantedBy=local.target

• Logout of the box

• Restart it

vagrant reload

• Connect with docker

docker -H localhost version