Docker Provider VS Docker Provisioner

Vagrantfile

VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.define "boot2docker", autostart: false do |b2d|
    b2d.vm.box = "yungsang/boot2docker"
    b2d.nfs.functional = false
    b2d.vm.network :forwarded_port, guest: 8080, host: 8080
  end

  config.vm.define "hello-world", primary: true do |v|
    v.vm.provider "docker" do |d|
      d.vagrant_vagrantfile = "./Vagrantfile"
      d.vagrant_machine = "boot2docker"

      d.image = "yungsang/busybox"
      d.name  = "hello-world"
      d.ports = ["8080:80"]
      d.cmd   = ["nc", "-p", "80", "-l", "-l", "-e", "echo", "hello world!"]
    end
  end
end

Vagrantfile.rb

VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.define "hello-world"

  config.vm.box = "boot2docker"

  config.vm.network :forwarded_port, guest: 8080, host: 8080

  config.vm.provision :docker do |d|
    d.run "hello-world",
      image: "yungsang/busybox",
      args: "-p 8080:80",
      cmd: "nc -p 80 -l -l -e echo hello world!"
  end
end

$ vagrant up --provider docker
$ nc localhost 8080
hello world!

$ vagrant up
$ nc localhost 8080
hello world!