配置镜像加速如下：
https://docker.1panel.live
当时安装showdoc出现如下错误：
2025/12/20 09:15:29 安装应用 [showdoc] 任务开始 [START]
2025/12/20 09:15:29 开始拉取镜像 [star7th/showdoc:arm-latest]
2025/12/20 09:15:48 镜像拉取成功
2025/12/20 09:15:48 启动 应用
2025/12/20 09:16:07 启动 应用 失败 : stderr: showdoc Pulling
Get “https://registry-1.docker.io/v2/”: context deadline exceeded (Client.Timeout exceeded while awaiting headers)
, err: exit status 18
2025/12/20 09:16:07 安装应用 [showdoc] 失败: stderr: showdoc Pulling
Get “https://registry-1.docker.io/v2/”: context deadline exceeded (Client.Timeout exceeded while awaiting headers)
, err: exit status 18
2025/12/20 09:16:08 [TASK-END]