для capistrano необходимо добавить расширения для rvm
set :rvm_ruby, "ruby-1.9.2-p180"
set :rvm_gem_home, "#{fetch(:base_dir)}/.rvm/gems/#{fetch(:rvm_ruby)}"
set :rvm_ruby_path, "#{fetch(:base_dir)}/.rvm/rubies/#{fetch(:rvm_ruby)}"
set :default_environment, {
'RUBY_VERSION' => fetch(:rvm_ruby),
'GEM_HOME' => "#{fetch(:rvm_gem_home)}:#{fetch(:rvm_gem_home)}@global",
'BUNDLE_PATH' => fetch(:rvm_gem_home),
'PATH' => "#{fetch(:rvm_gem_home)}/bin:#{fetch(:rvm_gem_home)}@global/bin:#{fetch(:rvm_ruby_path)}/bin:/home/rails/.rvm/bin:$PATH;",
}