1. 創建 Docker 服務的代理配置文件

sudo mkdir -p /etc/systemd/system/docker.service.d

2.創建文件 /etc/systemd/system/docker.service.d/http-proxy.conf，內容如下：

[Service]
Environment="HTTP_PROXY=http://192.168.0.111:7890"
Environment="HTTPS_PROXY=http://192.168.0.111:7890"
Environment="NO_PROXY=localhost,127.0.0.1"

3. 重新加載并重啟 Docker

sudo systemctl daemon-reexec
sudo systemctl daemon-reload
sudo systemctl restart docker

4.驗證配置是否生效

執行：

docker info | grep -i proxy

應輸出：

HTTP Proxy: http://192.168.0.111:7890
HTTPS Proxy: http://192.168.0.111:7890
No Proxy: localhost,127.0.0.1

5. 再次嘗試拉取鏡像或執行 Docker 命令

docker pull hello-world