docker更换国内源加速

更换docker的国内镜像源，可以加快镜像的下载。
1、在/etc/docker/下修改（如有）或创建daemon.json文件

nano /etc/docker/daemon.json

2、把以下内容复制进去：

{"registry-mirrors":["https://registry.hub.docker.com",
        "http://hub-mirror.c.163.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com"]}

3、重启docker

systemctl restart docker

4、查看是否更换成功

docker info

显示如下：

root@armbian:~# docker info
Client: Docker Engine - Community
 Version:    24.0.4
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.11.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.19.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 2
  Running: 2
  Paused: 0
  Stopped: 0
 Images: 5
 Server Version: 24.0.4
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 3dce8eb055cbb6872793272b4f20ed16117344f8
 runc version: v1.1.7-0-g860f061
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.1.39-ophub
 Operating System: Armbian 23.08.0-trunk bullseye
 OSType: linux
 Architecture: aarch64
 CPUs: 4
 Total Memory: 1.886GiB
 Name: armbian
 ID: d6e93fbb-6ea4-4949-9afc-d0dad983f69b
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://registry.hub.docker.com/
  http://hub-mirror.c.163.com/
  https://docker.mirrors.ustc.edu.cn/
  https://registry.docker-cn.com/
 Live Restore Enabled: false