Ruby on rails 使用Capistrano部署RVM时sudo出现问题

我想使用Capistrano在我的服务器上部署我的应用程序 我有包含以下内容的deploy.rb文件：

set :user, "deploy"
set :use_sudo, true
set :deploy_to, "/webapps/#{application}"
#set :deploy_via, :remote_cache #Using this option avoids to do a full repository clone


#RVM
set :rvm_type, :system  #System Wide installation
set :rvm_ruby_string, 'ree@K2'
set :rvm_install_shell, :bash

before 'deploy:setup','rvm:install_rvm'
before 'deploy:setup', 'rvm:install_ruby'

# if you're still using the script/reaper helper you will need
# these http://github.com/rails/irs_process_scripts

# If you are using Passenger mod_rails uncomment this:
namespace :deploy do
   task :start do ; end
   task :stop do ; end
   task :restart, :roles => :app, :except => { :no_release => true } do
     run "touch #{File.join(current_path,'tmp','restart.txt')}"
   end
 end

当我设置根用户、安装RVM（系统范围安装）甚至Ruby Enterprise时，一切都正常，但当我运行'cap deploy:setup'设置use_sudo选项和deploy user时，得到以下信息：

$ cap deploy:setup
  * executing `deploy:setup'
    triggering before callbacks for `deploy:setup'
  * executing `rvm:install_rvm'
  * executing "bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)"
    servers: ["myserver.com"]
Password: 
    [myserver.com] executing command
    [myserver.com] bash -c 'bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)'
*** [err :: myserver.com] bash: line 304: /usr/local/rvm/RELEASE: Permission denied
    command finished in 564ms
failed: "bash -c 'bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)'" on myserver.com

$cap部署：安装程序
*正在执行“部署：安装”
在回调“部署：安装程序”之前触发
*正在执行'rvm:install_rvm'
*执行“bash-s stable<请使用
1.1.0
进行测试：

gem install rvm-capistrano

您的部署用户是sudoer吗？是的，我认为它包含在sudoer文件中。谢谢，我已经将该问题链接到了这个问题上。我希望他们能够解决这个问题。谢谢，我直到今天才有时间测试它。它似乎可以工作。但是，现在ruby enterprise没有安装：
警告：**[err:：myserver.com]未能创建文件ruby-enterprise-1.8.7-2012.02.tar.gz
@ianenri打开一个包含更多详细信息的新问题。