我正在尝试部署rails应用程序,但它坚持错误

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
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deploy.rb

# 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
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capfile

# 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"
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Production.rb

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}
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/etc/Nginx/Nginx.conf

passenger_root /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini;
passenger_ruby /home/deploy/.rbenv/shims/ruby;
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在/ etc / Nginx的/启用的站点 –  /默认

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
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它使用正确的ruby版本.但我想尝试在另一个文件夹中安装宝石.我该如何修复它？