https://blog.wongcw.com/2018/09/21/ewomail-%e5%bc%80%e6%ba%90%e4%bc%81%e4%b8%9a%e9%82%ae%e4%bb%b6%e7%b3%bb%e7%bb%9f-%e7%9a%84docker%e9%95%9c%e5%83%8f/
EwoMail 开源企业邮件系统 的docker镜像