docker hub local mirror Log

docker login information stored in the .docker file in the home directory folder, view

cat ~/.docker/config.json 
{
    "auths": {
        "gcyimgs.mydomain.com:50000": {
            "auth": "*************"
        }
    },
    "HttpHeaders": {
        "User-Agent": "Docker-Client/18.09.6 (linux)"
    }
}

Local host file may be modified, such that a fixed point gcyimgs.mydomain.com ip address.

sudo vim /etc/hosts

# add local docker hub addr
192.168.0.10 gcyimgs.mydomain.com

Then restart your network so that the host take effect

sudo /etc/init.d/networking restart

docker login again

docker login -u[username] -p[password] gcyimgs.mydomain.com:50000