Vagrantfile for Rails development environment

Vagrantfile

VAGRANTFILE_API_VERSION = '2'

$install = <<SCRIPT
curl -L https://github.com/docker/fig/releases/download/1.0.1/fig-`uname -s`-`uname -m` > /usr/local/bin/fig
chmod +x /usr/local/bin/fig
SCRIPT

$build = <<SCRIPT
cd /vagrant
fig build
fig run web rake db:create
fig run web rake db:migrate
fig run web rake db:seed
SCRIPT

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.provider 'virtualbox' do |v|
    v.memory = 2048
    v.cpus = 2
  end

  config.vm.box = 'ubuntu/trusty64'
  config.vm.provision 'docker'
  config.vm.provision 'shell', inline: $install
  config.vm.network :private_network, ip: '172.17.8.100'
  config.vm.network 'forwarded_port', guest: 1080, host: 1080
  config.vm.synced_folder '.', '/vagrant', type: 'nfs', mount_options: ['nolock,vers=3,udp,noatime,actimeo=1']
  config.vm.provision 'shell', inline: $build
  config.vm.provision 'shell', inline: 'cd /vagrant && fig up -d', run: 'always'
end

NFS is problematic within Vagrant in my experience. It was quite a headache getting it all set up.

Define "reliability" though. What specifici problems are you having? Slow performance?

here is an article comparing different means to sync files between vagrant and host machine that you sould find enlightening.