1、问题描述

由于某些原因，导致Docker镜像在国内下载速度特别慢。所以为了沉浸式开发。最好切换为国内源。这里以163 的镜像仓库举例。首先修改/etc/docker/daemon.json配置文件。

sudo vi /etc/docker/daemon.json

将该文件内容替换为阿里源。修改后的/etc/docker/daemon.json文件为：

{"registry-mirrors": ["http://hub-mirror.c.163.com"]
}

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然后使用systemctl restart docker命令重启Docker即可。然后使用docker info命令查看镜像仓库信息，结果如下：

root@ubuntu:~# docker info
Client:Debug Mode: falseServer:Containers: 3Running: 0Paused: 0Stopped: 3Images: 3Server Version: 19.03.8Storage Driver: overlay2Backing Filesystem: <unknown>Supports d_type: trueNative Overlay Diff: trueLogging Driver: json-fileCgroup Driver: cgroupfsPlugins:Volume: localNetwork: bridge host ipvlan macvlan null overlayLog: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslogSwarm: inactiveRuntimes: runcDefault Runtime: runcInit Binary: docker-initcontainerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429runc version: dc9208a3303feef5b3839f4323d9beb36df0a9ddinit version: fec3683Security Options:apparmorseccompProfile: defaultKernel Version: 4.15.0-97-genericOperating System: Ubuntu 18.04.4 LTSOSType: linuxArchitecture: x86_64CPUs: 12Total Memory: 7.767GiBName: ubuntuID: 2XV6:BJ7Q:6BIH:4FIR:HEPL:3GF7:33A2:GGTU:EQMB:EKGX:EO34:5J44Docker Root Dir: /var/lib/dockerDebug Mode: falseRegistry: https://index.docker.io/v1/Labels:Experimental: falseInsecure Registries:127.0.0.0/8Registry Mirrors:http://hub-mirror.c.163.com/Live Restore Enabled: falseWARNING: No swap limit support

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