NFS issue when using Vagrant and Docker

shell

host:$ vagrant up --provider=docker
Bringing machine 'api' up with 'docker' provider...
==> api: Docker host is required. One will be created if necessary...
    api: Docker host VM is already ready.
==> api: Syncing folders to the host VM...
No host IP was given to the Vagrant core NFS helper. This is
an internal error that should be reported as a bug.

Vagrantfile

VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|

  config.vm.provider "docker" do |d|
    d.vagrant_vagrantfile = "./Vagrantfile.proxy"
  end
  
  config.vm.define "container" do |v|
    v.vm.provider "docker" do |d|
      d.name = "some-container"
      d.build_dir = "./container"
    end

    v.vm.synced_folder "./nfs-share",
                        "/shared",
                        type: "nfs"
  end

end

Vagrantfile.proxy

VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|

  config.vm.box = "hashicorp/precise64"
  config.vm.provider "virtualbox"

  config.vm.provision "docker"
  config.vm.provision "shell", inline:
    "ps aux | grep 'sshd:' | awk '{print $2}' | xargs kill"

end