harbor docker login ：443: connect: connection refused

[root@node3 tomcat]#  find / -name docker.service -type f
    /usr/lib/systemd/system/docker.service

    vim  /usr/lib/systemd/system/docker.service
    #添加--insecure-registry=mysql.gift
    #mysql.gift 是绑定hosts指向内网的一个harbor服务器
    ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry=mysql.gift

    [root@node3 tomcat]# systemctl daemon-reload
    [root@node3 tomcat]# systemctl restart docker
    #查看已经生效
    [root@node3 tomcat]# ps aux|grep docker
    root      9866  3.6  0.8 684740 71120 ?        Ssl  12:43   0:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry=mysql.gift
    root     10012  0.0  0.0 112708   980 pts/1    S+   12:43   0:00 grep --color=auto docker

    # 测试
    docker login  mysql.gift