Deploy with Capistrano + Passenger + Bundle

gistfile1.rb

require "bundler/capistrano"

set :application, "myapp"
set :keep_releases, 3

# Git settings
set :scm,           :git
set :repository,    'git@github.com:my_github_user/my_app.git'
set :branch,        'master'
set :copy_strategy, :export
set :deploy_via,    :remote_cache
set :repository_cache, "/var/cache/www/#{application}"
#set :git_shallow_clone, 1
#set :git_enable_submodules, 1
#set :scm_verbose   true

# SSH settings
set :user,          'ssh_user'
set :password,      'ssh_password'
set :use_sudo,      false
set :port,         '22'
default_run_options[:pty] = true
ssh_options[:forward_agent] = true

# Roles
task :production do
  set :rails_env,   'production'
  set :deploy_to,   "/home/rails/apps/#{application}/production"
  role :web, '0.0.0.0'
  role :app, '0.0.0.0'
  role :db, '0.0.0.0', :primary => true
end

task :staging do
  set :rails_env,   'staging'
  set :deploy_to,   "/home/rails/apps/#{application}/staging"
  role :web, '0.0.0.0'
  role :app, '0.0.0.0'
  role :db, '0.0.0.0', :primary => true
end

namespace :deploy do
  desc 'Restart Passenger'
  task :restart, :roles => :app do
    run "touch #{release_path}/tmp/restart.txt"
  end

  desc 'create symlinks'
  task :create_symlinks, :roles => :app do
    run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml"
    run "ln -nfs #{shared_path}/uploads/ #{release_path}/public/uploads"
    run "ln -nfs #{shared_path}/bundle/ #{release_path}/vendor/bundle"
  end

  desc 'run bundle install'
  task :bundle_install, :roles => :app do
    run "cd #{current_path} && bundle install --deployment --path #{shared_path}/bundle"
  end
end

after  "deploy:symlink", "deploy:create_symlinks", "deploy:bundle_install"