capistrano 3: deploy to local vagrant

vagrant.rb

# file: config/deploy/vagrant.rb
# this allows for `cap vagrant deploy`
set :rails_env, :production
set :server_hostname, "192.168.33.10"
server 'vagrant', user: 'vagrant', roles: %w{app web db}, primary: true
set :ssh_options, {
    forward_agent: true,
    host_name: "127.0.0.1",
    port: "2222",
    keys: ['.vagrant/machines/default/virtualbox/private_key']
  }
  
# disable slack notification
set :slack_webhook, nil