Docker 国内镜像源配置

第 1 步：编辑 Docker 配置文件

打开终端，使用文本编辑器（如 nano 或 vim）打开或创建 Docker 的守护进程配置文件：

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sudo nano /etc/docker/daemon.json

或者

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sudo vim /etc/docker/daemon.json

第 2 步：替换为可用的镜像源

docker 镜像配置：

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{
  "registry-mirrors": [
		"https://docker.1ms.run",
		"https://do.nark.eu.org", 
		"https://dc.j8.work", 
		"https://docker.m.daocloud.io", 
		"https://dockerproxy.com", 
		"https://docker.mirrors.ustc.edu.cn",
		"https://docker.nju.edu.cn"
  ]
}

第 3 步：重启 Docker 服务

保存文件并退出编辑器（在 nano 中按 Ctrl+O 保存，Enter 确认，Ctrl+X 退出），然后重新加载配置并重启 Docker：

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sudo systemctl daemon-reload
sudo systemctl restart docker

第 4 步：验证并重新拉取

验证镜像源是否已成功加载：

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docker info | grep -A 5 "Registry Mirrors"

如果输出中显示了新的镜像源地址，如：

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root@ubuntu-26:~# docker info | grep -A 5 "Registry Mirrors"
 Registry Mirrors:
  https://docker.1ms.run/
  https://docker.mirrors.ustc.edu.cn/
  https://hub-mirror.c.163.com/
  https://mirror.baidubce.com/
 Live Restore Enabled: false

即可重新运行测试：

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docker run hello-world

出现以下内容代表成功：

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Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d5e71e642bf5: Download complete
4f55086f7dd0: Pull complete
Digest: sha256:11a3eb1597e864c51b3f56733cb2e8a90bf0c284bfc05f9444d81c558bc848aa
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/