sudo dnf -y install docker
/etc/containers/registries.conf
文档后面增加以下内容:
[registries.search]
registries = ['registry.access.redhat.com',
'registry.redhat.io',
'docker.io']
unqualified-search-registries = ["registry.fedoraproject.org",
"registry.access.redhat.com",
"registry.centos.org",
"docker.io"]