要在Ubuntu 20.04上安装Docker,您可以按照以下步骤操作:
### 步骤 1: 更新包索引
确保您的包索引是最新的,运行以下命令:
sudo apt update
### 步骤 2: 安装必需的软件包,以允许apt通过HTTPS使用repository
sudo apt install apt-transport-https ca-certificates curl software-properties-common
### 步骤 3: 添加Docker官方的GPG密钥
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
### 步骤 4: 设置稳定的Docker存储库
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
### 步骤 5: 更新包索引
sudo apt update
### 步骤 6: 安装Docker Engine
sudo apt install docker-ce docker-ce-cli containerd.io
### 步骤 7: 启动并验证Docker服务
sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl status docker
### 步骤 8: 验证安装
运行以下命令来验证Docker是否正确安装:
docker --version
恭喜您现在应该已经成功安装Docker在Ubuntu 20.04上。