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在无法直接访问 Docker Hub 的环境中，可以通过配置 Docker daemon 使用代理来拉取镜像。

Daemon 配置

创建或编辑 /etc/docker/daemon.json 文件：

{\n  \"proxies\": {\n    \"http-proxy\": \"http://{host}:{port}\",\n    \"https-proxy\": \"http://{host}:{port}\",\n    \"no-proxy\": \"localhost, 127.0.0.0/8\"\n  }\n}\n

将 {host} 和 {port} 替换为实际的代理服务器地址和端口。

重启服务

配置完成后重启 Docker daemon 使配置生效：

sudo systemctl restart docker\n

验证配置

重启后可以验证代理是否生效：

# 查看 Docker info 中的代理配置\ndocker info | grep -i proxy\n\n# 尝试拉取镜像测试\ndocker pull hello-world\n

注意事项

no-proxy 字段指定不走代理的地址，通常包含本地地址
代理地址支持 HTTP 和 HTTPS 协议
如果代理需要认证，格式为 http://user:password@host:port

\n
参考: Daemon proxy configuration
\n

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