我在将rails应用程序部署到Digital Ocean时遇到问题 . 该应用程序使用Rails 5，ruby 2.4.0，capistrano和乘客 . 我试图通过SSH将bitbucket中的私有存储库连接到数字海洋，这可能是我的问题 .

这是我的deploy.rb

set :application, 'APP_NAME'
set :repo_url, 'git@bitbucket.org:USERNAME/APP_NAME.git'

set :user, "deploy"
set "stages", %w(production staging)
set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/pids', 'tmp/cache', 'tmp/sockets', 'vendor/bundle', 'public/system')
namespace :deploy do

  after :restart, :clear_cache do
    on roles(:web), in: :groups, limit: 3, wait: 10 do
      # Here we can do anything such as:
      # within release_path do
      #   execute :rake, 'cache:clear'
      # end
    end
  end
end

这是我的deploy / production.rb文件：

role :app, %w{deploy@ADDRESS}
role :web, %w{deploy@ADDRESS}
role :db, %w{deploy@ADDRESS}, :primary => true
set :branch, "master"
set :rails_env, "staging"
set :deploy_to, "var/www/APP_NAME_production"

我一直在关注这个tutorial on how to setup a rails app on digital ocean .

我可以完成一个cap staging deploy：check但是在运行cap staging deploy时遇到以下错误：

fatal: destination path 'var/www/APP_NAME/repo' already exists and is not an empty directory.
...
SSHKit::Command::Failed: git exit status: 128
...

任何帮助将不胜感激！

更新：宝石 -

gem 'rails', '~> 5.0.0', '>= 5.0.0.1'
ruby '2.4.0'
group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console'
  gem 'listen', '~> 3.0.5'
 ...
  gem 'capistrano', '~>3.4.0'
  gem 'capistrano-ssh-doctor', '~> 1.0'
  gem 'capistrano-rails', '~>1.1'
  gem 'capistrano-passenger' 
end

Capfile：

# Load DSL and set up stages
require 'capistrano/setup'
require 'capistrano/ssh_doctor'
# Include default deployment tasks
require 'capistrano/deploy'

# Include tasks from other gems included in your Gemfile
#
# For documentation on these, see for example:
#
#   https://github.com/capistrano/rvm
#   https://github.com/capistrano/rbenv
#   https://github.com/capistrano/chruby
#   https://github.com/capistrano/bundler
#   https://github.com/capistrano/rails
#   https://github.com/capistrano/passenger
#
# require 'capistrano/rvm'
# require 'capistrano/rbenv'
# require 'capistrano/chruby'
require 'capistrano/bundler'
require 'capistrano/rails/assets'
require 'capistrano/rails/migrations'
require 'capistrano/passenger'

# Load custom tasks from `lib/capistrano/tasks` if you have any defined
Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }

谢谢！

ruby-on-rails bitbucket capistrano digital-ocean