sudo apt update

sudo apt upgrade -y

sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bf

sudo systemctl restart sshd.service

sudo apt install -y ca-certificates curl gnupg lsb-release 安装依赖

sudo mkdir -p /etc/apt/keyrings 创建密钥存储目录

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg 下载并添加Docker官方GPG密钥

echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null添加 Docker 软件源

# 更新软件源索引
sudo apt update

安装最新版本的Docker Engine、Containerd和Docker Compose

sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

sudo docker run hello-world验证是否安装成功

sudo usermod -aG docker ubuntu 将当前用户添加到docker组

sudo systemctl enable docker 开机启动

sudo systemctl is-enabled docker 验证自启

sudo apt purge -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

# 删除数据目录（谨慎操作，会删除所有容器、镜像、卷等）
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd