最低限のCoreOSのVagrantfile

本家のファイルを最低限動く程度まで削りました。
synced_folderにnfsを使用しているので、WindowsはVagrant WinNFSdをインストールしてください。

Vagrantfile

# -*- mode: ruby -*-
# # vi: set ft=ruby :

Vagrant.configure("2") do |config|
  config.ssh.insert_key = false
  config.vm.box = "coreos-alpha"
  config.vm.box_url = "https://storage.googleapis.com/alpha.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json"

  config.vm.provider :virtualbox do |v|
    v.check_guest_additions = false
    v.functional_vboxsf     = false
    v.memory = 1024
    v.cpus = 1
  end

  if Vagrant.has_plugin?("vagrant-vbguest") then
    config.vbguest.auto_update = false
  end

  config.vm.network :private_network, :ip => "172.17.8.101"

  config.vm.synced_folder "host-side path", "guest-side path", :nfs => true, :mount_options => ["nolock,vers=3,udp"]
end

プロビジョニング時にDocker Composeをインストールするならこんな感じでしょうか。

Vagrantfile

# -*- mode: ruby -*-
# # vi: set ft=ruby :

Vagrant.configure("2") do |config|
  config.ssh.insert_key = false
  config.vm.box = "coreos-alpha"
  config.vm.box_url = "https://storage.googleapis.com/alpha.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json"

  config.vm.provider :virtualbox do |v|
    v.check_guest_additions = false
    v.functional_vboxsf     = false
    v.memory = 1024
    v.cpus = 1
  end

  if Vagrant.has_plugin?("vagrant-vbguest") then
    config.vbguest.auto_update = false
  end

  config.vm.network :private_network, :ip => "172.17.8.101"

  config.vm.provision :shell, inline: <<-SHELL
    mkdir -p /opt/bin
    curl -L https://github.com/docker/compose/releases/download/1.12.0/docker-compose-`uname -s`-`uname -m` > /opt/bin/docker-compose
    chmod +x /opt/bin/docker-compose
  SHELL

  config.vm.synced_folder "host-side path", "guest-side path", :nfs => true, :mount_options => ["nolock,vers=3,udp"]
end