Docker 在 Debian 12 上的安装
- 安装
- 验证
- 测试
- 更多信息
引言
在现代的开发环境中,容器技术发挥着至关重要的作用。Docker 提供了快速、可靠和易于使用的容器化解决方案,使开发人员和 DevOps 专业人士能够以轻松的方式将应用程序从一个环境部署到另一个环境。 Docker 的安装过程在 Debian 12 系统上非常简单,只需几条命令即可完成。在接下来的部分,我将详细介绍 Docker 的安装步骤和基本功能。
安装
安装 Docker 需要以下条件:
- 已经安装的 Debian 12 系统 (VM 或硬件服务器)
- root 权限
可以使用以下命令安装 Docker:
sudo su &&
apt update &&
apt install ca-certificates curl gnupg apt-transport-https gpg
下载 GPG 密钥并将其存储在系统中:
curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker.gpg] https://download.docker.com/linux/debian bookworm stable" |tee /etc/apt/sources.list.d/docker.list > /dev/null
apt update
安装 Docker 包:
apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-compose
验证
可以使用以下命令检查 Docker 是否安装成功并是否在系统启动时自动启动:
systemctl is-active docker
测试
也可以通过启动 hello-world
Docker镜像来测试安装是否成功:
docker run hello-world
如果一切正常,将看到类似以下输出:
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
478afc919002: Pull complete
Digest: sha256:03b30c6a3c320ff172b52bd68eddffde6ded08ce47e650fe52de861c5e9df46d
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(arm64v8)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
更多信息
有关 Docker 的更多信息,请参阅以下页面:
- Docker 官方文档:https://docs.docker.com/get-started/
- Docker Hub:https://hub.docker.com/