docker 重新安裝
第一步:彻底清理 Docker 残留文件
bash
# 卸载已安装的 Docker 包(如果有)
sudo apt-get purge -y docker-ce docker-ce-cli containerd.io docker-compose-plugin# 删除 Docker 数据目录和配置文件
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd
sudo rm -rf /etc/docker
sudo rm -rf /etc/apt/sources.list.d/docker.list # 之前的 Docker 源配置# 清理无用依赖
sudo apt-get autoremove -y
sudo apt-get autoclean
第二步:更换国内软件源(解决更新错误)
bash
# 备份并替换系统源为阿里云(适用于 Ubuntu 22.04)
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
echo "deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse" | sudo tee /etc/apt/sources.list# 更新源缓存
sudo apt-get update
第三步:用国内源重新安装 Docker
bash
# 安装依赖
sudo apt-get install -y ca-certificates curl gnupg lsb-release# 添加 Docker 官方 GPG 密钥(用国内镜像加速)
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg # 确保权限正确# 添加阿里云 Docker 源(替代官方源,速度更快)
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null# 更新并安装 Docker
sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
第四步:启动 Docker 并验证
bash
# 启动 Docker 服务
sudo systemctl start docker# 设置开机自启动
sudo systemctl enable docker# 验证是否安装成功(会自动下载测试镜像并运行)
sudo docker run hello-world