Using Bundler 0.9.1 with Capistrano

deploy.rb

# ...

namespace :bundler do
  task :create_symlink, :roles => :app do
    shared_dir = File.join(shared_path, 'bundle')
    release_dir = File.join(current_release, '.bundle')
    run("mkdir -p #{shared_dir} && ln -s #{shared_dir} #{release_dir}")
  end
  
  task :bundle_new_release, :roles => :app do
    bundler.create_symlink
    run "cd #{release_path} && bundle install --without test"
  end
  
  task :lock, :roles => :app do
    run "cd #{current_release} && bundle lock;"
  end
  
  task :unlock, :roles => :app do
    run "cd #{current_release} && bundle unlock;"
  end
end

# HOOKS
after "deploy:update_code" do
  bundler.bundle_new_release
  # ...
end