Rails控制台无法与数字海洋上的Dokku合作

Question

我已将我的Rails应用程序推送到Digital Ocean Dokku Droplet,除了Rails控制台外,一切正常.当我运行dokku run myapp rails c此错误时出现:

/app/vendor/ruby-2.1.2/lib/ruby/2.1.0/irb/completion.rb:9:in `require': libreadline.so.5: cannot open shared object file: No such file or directory - /app/vendor/ruby-2.1.2/lib/ruby/2.1.0/x86_64-linux/readline.so (LoadError)
    from /app/vendor/ruby-2.1.2/lib/ruby/2.1.0/irb/completion.rb:9:in `<top (required)>'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/console.rb:3:in `require'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/console.rb:3:in `<top (required)>'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:128:in `require'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:128:in `require_command!'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:59:in `console'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
    from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.1.4/lib/rails/commands.rb:17:in `<top (required)>'
    from /app/bin/rails:4:in `require'
    from /app/bin/rails:4:in `<main>'

该应用程序安装在一个干净的液滴上.Dokku只安装了一个插件(Postgres).

Answer 1

添加gem 'rb-readline到Gemfile解决了这个问题.