解决Ubuntu拉取Docker镜像失败问题。

1. 配置文件添加代码

修改配置文件为/etc/systemd/system/docker.service.d/proxy.conf

[Service]
Environment="HTTP_PROXY=http://127.0.0.1:8889/"
Environment="HTTPS_PROXY=http://127.0.0.1:8889/"
Environment="NO_PROXY=localhost,127.0.0.1"

2. 修改daemon.json文件

修改配置文件为/etc/docker/daemon.json

{
  "registry-mirrors": [
    "https://docker.m.daocloud.io"
  ],
  "dns": ["8.8.8.8","1.1.1.1"],
  "ipv6":false
}

3. 重启Docker

sudo systemctl daemon-reexec
sudo systemctl restart docker

4. 重新拉取镜像就可以了