Docker 拉取镜像失败的解决方法

报错信息

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download failed after attempts=6: dial tcp 104.18.125.25:443: i/o timeout

Step 1：写入镜像配置

Step 1.1：创建目录

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sudo mkdir -p /etc/docker

Step 1.2：写入镜像配置

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sudo tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "https://docker.m.daocloud.io",
        "https://dockerproxy.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://docker.nju.edu.cn"
    ]
}
EOF

Step 2：重启 Docker 服务

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sudo systemctl daemon-reload
sudo systemctl restart docker