按照网上说的说法，造成这个现象有很多原因，大家可以多尝试一下，下面贴出解决我问题的方法：
docker账户分为两个部分，一个是email，一个是dockerID，使用docker login登陆时要使用dockerid 就这么简单，哈哈
username：填写dockerID 密码不变
查看dockerID 可以登陆dockerhub， happylion 就是dockerID
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