fixed issue描述里的附件解析关联，增强附件访问权限控制

app/controllers/api/v1/issues_controller.rb

@@ -23,7 +23,8 @@ class Api::V1::IssuesController < Api::V1::BaseController
   before_action :load_issue, only: [:show, :update, :destroy]
   before_action :check_issue_operate_permission, only: [:update, :destroy]
 
-  def show 
+  def show
+    @issue.associate_attachment_container
     @user_permission = current_user.present? && current_user.logged? && (@project.member?(current_user) || current_user.admin? || @issue.user == current_user)
   end