Using default tag: latest
Error response from daemon: Get https://registry-1.docker.io/v2/library/mysql/manifests/latest: Get https://auth.docker.io/token?scope=repository%3Alibrary%2Fmysql%3Apull&service=registry.docker.io: dial tcp: lookup auth.docker.io: no such host
解决方法：
等一下会，多尝试一遍，成功了