1、List.contains方法的源码是用equals()比较的,也就是说比较的是地址,所以要在类中重写equals()方法. https://www.cnblogs.com/smallfa/news/2019/04/29/10790053.html
2、xxxxxxx.mirror.aliyuncs.com/library/debian:latest nerdctl pull 全路径地址
