安装1panel时提示docker安装失败

系统版本:CentOS Linux release 7.6.1810 (Core)
下载的官方脚本执行就报错了。

[root@localhost ~]# sh quick_start.sh
安装包已存在,跳过下载
1panel-v1.10.9-lts-linux-amd64/1panel.service
1panel-v1.10.9-lts-linux-amd64/1pctl
1panel-v1.10.9-lts-linux-amd64/LICENSE
1panel-v1.10.9-lts-linux-amd64/README.md
1panel-v1.10.9-lts-linux-amd64/install.sh
1panel-v1.10.9-lts-linux-amd64/1panel

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[1Panel Log]: ======================= 开始安装 =======================
设置 1Panel 安装目录(默认为/opt):
[1Panel Log]: 您选择的安装路径为 /opt
[1Panel Log]: … 在线安装 docker
选择延迟最低的源 https://mirrors.163.com/docker-ce,延迟为 0.188333 秒

curl: (7) Failed to connect to 2a03:2880:f117:83:face:b00c:0:25de: 网络不可达
sh: get-docker.sh: 没有那个文件或目录
[1Panel Log]: … 启动 docker
Failed to execute operation: No such file or directory
Failed to start docker.service: Unit not found.
[1Panel Log]: docker 安装失败