docker login Succeeded, docker pull failed

I use pass
docker login Succeeded:

# docker login 
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: liaolinrong
Password: 
Login Succeeded

but when docker pull a private image, is error:

docker pull liaolinrong/centos:7.3.1611
Error response from daemon: pull access denied for liaolinrong/centos, repository does not exist or may require 'docker login'

/root/.docker/config.json :

# cat /root/.docker/config.json 
{
	"auths": {
		"https://index.docker.io/v1/": {}
	},
	"HttpHeaders": {
		"User-Agent": "Docker-Client/18.09.7 (linux)"
	},
	"credsStore": "pass"
}

os:

# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core)

 # uname -a
Linux VM_0_6_centos 3.10.0-862.el7.x86_64 #1 SMP Fri Apr 20 16:44:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

docker version:

# docker -v
Docker version 18.09.7, build 2d0083d

Start with the reported docker login and docker pull commands, the /root/.docker/config.json contents, and the pass credential-store behavior on CentOS 7.5 with Docker 18.09.7. Reproduce the failure and trace whether credentials are stored and retrieved correctly; the issue is done when private-image pulls work or the cause and required fix are documented.