问rbenv: bundle:在生产服务器上找不到命令

EN

DEBUG[1a70ba92] Command: cd /home/deploy/myapp/releases/20140615090226 && ( PATH=$HOME/.rbenv   /shims:$HOME/.rbenv/bin:$PATH RBENV_ROOT=~/.rbenv RBENV_VERSION=2.1.2 ~/.rbenv/bin/rbenv exec bundle install --binstubs /home/deploy/myapp/shared/bin --path /home/deploy/myapp/shared/bundle --without development test --deployment --quiet )
DEBUG[1a70ba92]     rbenv: bundle: command not found
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing on host xxx.xxx.xxx.xx: bundle exit status: 127
bundle stdout: Nothing written
bundle stderr: rbenv: bundle: command not found

# config valid only for Capistrano 3.1
lock '3.1.0'

set :application, 'myapp'
set :repo_url, 'git@bitbucket.org:username/myapp.git'

# Default branch is :master
# ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }

# Default deploy_to directory is /var/www/my_app
 set :deploy_to, '/home/deploy/myapp'

# Default value for :scm is :git
# set :scm, :git
set :branch, "master"

# Default value for :format is :pretty
# set :format, :pretty

# Default value for :log_level is :debug
# set :log_level, :debug

# Default value for :pty is false
# set :pty, true

# Default value for :linked_files is []
 set :linked_files, %w{config/database.yml}

# Default value for linked_dirs is []
 set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

# Default value for default_env is {}
# set :default_env, { path: "/opt/ruby/bin:$PATH" }
set :default_env, { path: "$HOME/.rbenv/shims:$HOME/.rbenv/bin:$PATH" }
# Default value for keep_releases is 5
# set :keep_releases, 5

namespace :deploy do

  desc 'Restart application'
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      # Your restart mechanism here, for example:
       execute :touch, release_path.join('tmp/restart.txt')
    end
  end

  after :publishing, :restart

  end

    desc "Symlink shared config files"
    task :symlink_config_files do
        run "#{ try_sudo } ln -s #{ deploy_to }/shared/config/database.yml #{ current_path }/config/database.yml"
    end

end

# Load DSL and Setup Up Stages
require 'capistrano/setup'

# Includes default deployment tasks
require 'capistrano/deploy'
require 'capistrano/bundler'
require 'capistrano/rails'
require 'capistrano/rbenv'
set :rbenv_ruby, "2.1.2"

set :stage, :production
role :app, %w{deploy@xxx.xxx.xxx.xx}
role :web, %w{deploy@xxx.xxx.xxx.xx}
role :db,  %w{deploy@xxx.xxx.xxx.xx}
set :password, ask('Server password', nil)
server 'xxx.xxx.xxx.xx', user: 'deploy', password: fetch(:password), roles: %w{web app}

passenger_root /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini;
passenger_ruby /home/deploy/.rbenv/shims/ruby;

server {
        listen 80 default_server;
        listen [::]:80 default_server ipv6only=on;

        server_name mydomain.com;
        passenger_enabled on;
        rails_env    production;
        root         /home/deploy/myapp/current/public;

        # redirect server error pages to the static page /50x.html
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
}


which ruby
/home/deploy/.rbenv/shims/ruby

ruby -v
ruby 2.1.2p95