解决拉取Docker失败

如果出现这种问题

可以试试下面这种方式来解决

▼
bash
复制代码

备份原始配置文件
sudo cp /etc/docker/daemon.json /etc/docker/daemon.json.bak

清理或修复 daemon.json 文件
sudo nano /etc/docker/daemon.json

删除 文件中的所有内容，确保文件为空。

cv下面这个文件内容
{
    "registry-mirrors": [
        "https://docker.m.daocloud.io",
        "https://docker.1panel.live",
        "https://hub.rat.dev"
    ]
}

按 Ctrl + O 保存文件，按 Enter 确认。
按 Ctrl + X 退出编辑器。

重启 Docker 服务
sudo systemctl restart docker


验证 Docker 是否启动正常
sudo systemctl status docker

运行以下命令测试：
sudo docker run hello-world
就拉取成功了 

wjp@ubuntu:~$ sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Pull complete 
Digest: sha256:5b3cc85e16e3058003c13b7821318369dad01dac3dbb877aac3c28182255c724
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/