def action_runner
      @action_runner ||= Action::Runner.new do
        {
          action_runner:  action_runner,
          box_collection: boxes,
          hook:           method(:hook),
          host:           host,
          machine_index:  machine_index,
          gems_path:      gems_path,
          home_path:      home_path,
          root_path:      root_path,
          tmp_path:       tmp_path,
          ui:             @ui,
          env:            self
        }
      end
    end
def action_runner
      @action_runner ||= Action::Runner.new do
        {
          action_runner:  action_runner,
          box_collection: boxes,
          hook:           method(:hook),
          host:           host,
          machine_index:  machine_index,
          gems_path:      gems_path,
          home_path:      home_path,
          root_path:      root_path,
          tmp_path:       tmp_path,
          ui:             @ui,
          env:            self
        }
      end
    end
Action runner for executing actions in the context of this environment.

 @return [Action::Runner]