title: Why does Capistrano execute 'rake' from /usr/bin/env instead of /usr/local/rvm/gems/ruby-2.1.0/bin/rake?
body: <p>When I execute cap production deploy Capistrano's task, it tries to execute rake from /usr/bin/env but my gem is installed into /usr/local/rvm/gems/ruby-2.1.0/bin/rake !</p>
  
  <p><strong>Versions:</strong>
  Ruby 2.1 / Capistrano 3.0.1 / Rake 10.1.1 / Rails 3.2.16 / rvm 1.25.12</p>
  
  <p>I'm using rvm on myserver to facilitate ruby installation, but I install and udate manually the gems with user rvm_admin.
  rvm has been installed 'system wide'.
  I don't use capistrano-rvm and I don't use capistrano-rails, as I manually update ruby, gems, assets, and migrations.</p>
  
  <p><strong>Platform:</strong>
  Working on XUbuntu 12.04.4 LTS
  Deploying to Debian Wheezy</p>
  
  <p><strong>Files:</strong></p>
  
  <p><strong>Capfile</strong></p>
  
  <pre><code>require 'capistrano/setup'
  require 'capistrano/deploy'
  Dir.glob('lib/capistrano/tasks/*.cap').each { |r| import r }
  deploy.rb
  set :application, 'odpf'
  set :repo_url, 'git@github.com:myrepo/myapp.git'
  set :branch, 'production_1.01'
  set :deploy_to, '/var/www/odpf'
  set :pty, false
  set :scm, :git
  set :format, :pretty
  
  
  namespace :deploy do
    desc 'Restart application'
    task :restart do
      on roles(:app), in: :sequence, wait: 5 do
        # Your restart mechanism here, for example:
        # l'exemple correspond à ce qu'il faut pour restart passenger :
        # http://www.modrails.com/documentation/Users%20guide%20Apache.html#_redeploying_restarting_the_ruby_on_rails_application
        execute :mkdir, '-p', "#{release_path}/tmp"
        execute :touch, release_path.join('tmp/restart.txt')
      end
    end
  
  
    after :restart, :clear_cache do
      on roles(:web), in: :groups, limit: 3, wait: 10 do
        # Here we can do anything such as:
        # Conformément à : http://guides.rubyonrails.org/v3.2.14/command_line.html#tmp
        within release_path do
          execute :rake, 'tmp:cache:clear'
        end
      end
    end
  
    # Create symlink to database.yml after publication
    before 'deploy:published', 'db_access:create_symlinks'
  
    after :finishing, 'deploy:cleanup'
  end
  </code></pre>
  
  <p><strong>Stage files (production.rb, staging.rb)</strong></p>
  
  <pre><code>set :stage, :production
  server 'myserver.net', user: 'rvm_admin', roles: %w{web app db}
  set :ssh_options, { forward_agent: true, port: 8888 }
  </code></pre>
  
  <p>When I perform a <code>cap production deploy</code>, It goes well untill soem point at the end of the output :</p>
  
  <pre><code>INFO [0a0dbcb0] Running /usr/bin/env rake tmp:cache:clear on myserver.net
  DEBUG [0a0dbcb0] Command: cd /var/www/odpf/releases/20140129101515 &amp;&amp; /usr/bin/env rake tmp:cache:clear
  DEBUG [0a0dbcb0] /usr/bin/env: rake
  DEBUG [0a0dbcb0] : Aucun fichier ou dossier de ce type
  cap aborted!
  rake stdout: Nothing written
  rake stderr: Nothing written
  /home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/sshkit-1.0.0/lib/sshkit/command.rb:94:in `exit_status='
  /home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:125:in `block (4 levels) in _execute'
  /home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `call'
  </code></pre>
  
  <p>Capistrano try to execute rake from <code>/usr/bin/env</code>
  but my gem is installed here :</p>
  
  <pre><code>rvm_admin@myserver:/var/www/odpf/current$ bundle show rake
  /usr/local/rvm/gems/ruby-2.1.0/gems/rake-10.1.1
  rvm_admin@myserver:/var/www/odpf/current$ which rake
  /usr/local/rvm/gems/ruby-2.1.0/bin/rake
  </code></pre>
  
  <p>What am I doing wrong ?</p>