Ubuntu 安装 Docker Engine：配置官方 Apt 存储库

在安装 Docker 之前，需要卸载所有可能发生冲突的软件包。

卸载冲突的软件包

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for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do
  sudo apt-get remove $pkg
done

设置 Docker Apt 存储库

在新的主机上首次安装 Docker 前，需要先设置 Docker Apt 存储库。之后，可以从该存储库安装和更新 Docker。

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# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

安装 Docker

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

验证安装

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sudo docker run hello-world