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geekpi
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[#]: subject: "Install Docker on Arch Linux"
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[#]: via: "https://itsfoss.com/install-docker-arch-linux/"
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[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/"
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[#]: collector: "lujun9972/lctt-scripts-1693450080"
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[#]: translator: "geekpi"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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Install Docker on Arch Linux
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======
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Installing Docker on Arch Linux is easy. It is available in the Extra repository and you can simply [do the pacman magic][1]:
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```
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sudo pacman -S docker
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```
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But there are more steps involved here to run Docker on Arch Linux properly.
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### Making Arch Docker ready
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It all comes down to these steps:
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* Install Docker from Arch repository
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* Start the Docker daemon and run it automatically at each boot
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* Add user to docker group to run docker commands without sudo
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Let's see the steps in detail.
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#### Step 1: Installing Docker package
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Open the terminal and use the following command:
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```
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sudo pacman -S docker
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```
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Enter the password and press Y when asked for it.
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![][2]
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It may take some time depending on the mirror you are using.
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💡
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If you see a package not found or 404 error, your sync database is perhaps old. Update the system (it will download a lot of packages and take time) with: sudo pacman -Syu
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#### Step 2: Start docker daemon
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Docker is installed but it is not running. You should start the dcoker daemon before **running the Docker command for the first time** :
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```
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sudo systemctl start docker.service
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```
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I also suggest enabling the Docker service so that the docker daemon starts automatically when your system boots.
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```
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sudo systemctl enable docker.service
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```
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This way, you can just start running docker commands. You won't need to manually start the docker service anymore.
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![][3]
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#### Step 3: Add user to docker group
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Docker is installed and the Docker service is running. You are almost ready to run docker commands.
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However, by default, you need to use sudo with docker commands. And that's annoying.
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To avoid using sudo with each docker command, you can add yourself (or any other user) to the docker group like this:
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```
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sudo usermod -aG docker $USER
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```
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**You must log out (or close the terminal) and log back in for the above change to take effect. If you don't want to do that, use this command:**
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```
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newgrp docker
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```
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Now the stage is set. Let's test it.
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#### Step 4: Verify docker installation
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There is a tiny docker image provided by docker itself to test the docker installation. Run it and see if everything works well:
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```
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docker run hello-world
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```
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You should see output like this for successful docker run:
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![][4]
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Congratulations! You have successfully installed Docker on Arch Linux.
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### Optional: Install Docker Compose
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Docker Compose has become an integral part of Docker. It allows you to manage multiple container applications.
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The older classic compose is provided by the `docker-compose` Python package. Docker has also ported it to Go and provides it with `docker compose` but this package comes with [Docker Desktop][5].
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At this stage, I would suggest going with the classic docker-compose plugin and install it with this command:
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```
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sudo pacman -S docker-compose
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```
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![][6]
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### Troubleshooting Tips
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Here are some common issues you may face and the possible solutions:
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#### Tab completion not working for docker sub commands
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If you want to use tab completion for the docker command options (like completing im to images etc), install the bash-completion package:
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```
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sudo pacman -S bash-completion
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```
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Close the terminal and start a new one. You should be able to use tab completion with Docker commands now.
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#### Cannot connect to the Docker daemon error
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If you see the following error:
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```
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docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
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See 'docker run --help'.
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```
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That's because the docker daemon is not running. Refer to step 2 and start the docker service, make sure it is running and enable it so that docker daemon runs automatically at each boot.
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```
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sudo systemctl start docker.service
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sudo systemctl enable docker.service
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```
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#### Permission denied while trying to connect to Docker daemon socket
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If you see this error:
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```
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docker: permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/create": dial unix /var/run/docker.sock: connect: permission denied.
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See 'docker run --help'.
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```
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That's because you need to either run the docker command with sudo or add the user to docker group to run docker commands without sudo.
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I hope this quick post helps you run Docker on Arch Linux.
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--------------------------------------------------------------------------------
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via: https://itsfoss.com/install-docker-arch-linux/
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作者：[Abhishek Prakash][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://itsfoss.com/author/abhishek/
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[b]: https://github.com/lujun9972
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[1]: https://itsfoss.com/pacman-command/
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[2]: https://itsfoss.com/content/images/2023/10/installing-docker-arch-linux.png
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[3]: https://itsfoss.com/content/images/2023/10/start-docker-daemon-arch-linux.png
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[4]: https://itsfoss.com/content/images/2023/10/docker-running-successfully-arch-linux.png
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[5]: https://www.docker.com/products/docker-desktop/
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[6]: https://itsfoss.com/content/images/2023/10/install-docker-compose.png
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203
translated/tech/20231030 Install Docker on Arch Linux.md
Normal file
203
translated/tech/20231030 Install Docker on Arch Linux.md
Normal file
@ -0,0 +1,203 @@
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[#]: subject: "Install Docker on Arch Linux"
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[#]: via: "https://itsfoss.com/install-docker-arch-linux/"
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[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/"
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[#]: collector: "lujun9972/lctt-scripts-1693450080"
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[#]: translator: "geekpi"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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在 Arch Linux 上安装 Docker
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======
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在 Arch Linux 上安装 Docker 很简单。它可以在 Extra 仓库中找到，你可以简单地[执行 pacman 魔法][1]：
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````
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sudo pacman -S docker
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````
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但要在 Arch Linux 上正确运行 Docker，还需要执行更多步骤。
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### 让 Arch Docker 做好准备
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这一切都归结为以下步骤：
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* 从 Arch 仓库安装 Docker
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* 启动 Docker 守护进程并在每次启动时自动运行
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* 将用户添加到 docker 组以运行 docker 命令而无需 sudo
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让我们看看详细步骤。
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#### 步骤 1：安装 Docker 包
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打开终端并使用以下命令：
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````
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sudo pacman -S docker
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````
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输入密码并在询问时按 Y。
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![][2]
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这可能需要一些时间，具体取决于你使用的镜像。
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💡
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如果你看到找不到包或 404 错误，那么你的同步数据库可能是旧的。使用以下命令更新系统（它将下载大量软件包并需要时间）： sudo pacman -Syu
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#### 步骤 2：启动 docker 守护进程
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Docker 已安装但未运行。你应该在**第一次运行 Docker 命令**之前启动 dcoker 守护进程：
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````
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sudo systemctl start docker.service
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````
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我还建议启用 Docker 服务，以便 docker 守护进程在系统启动时自动启动。
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````
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sudo systemctl enable docker.service
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````
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这样，你就可以开始运行 docker 命令了。你不再需要手动启动 docker 服务。
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![][3]
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#### 步骤 3：将用户添加到 docker 组
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Docker 已安装并且 Docker 服务正在运行。你几乎已准备好运行 docker 命令。
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但是，默认情况下，你需要将 sudo 与 docker 命令一起使用。这很烦人。
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为了避免在每个 docker 命令中使用 sudo，你可以将自己（或任何其他用户）添加到 docker 组，如下所示：
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````
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sudo usermod -aG docker $USER
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````
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**你必须注销（或关闭终端）并重新登录才能使上述更改生效。如果你不想这样做，请使用以下命令：**
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````
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newgrp docker
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````
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现在已经准备好了。我们来测试一下。
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#### 步骤 4：验证 docker 安装
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docker 本身提供了一个很小的 docker 镜像来测试 docker 安装。运行它并查看是否一切正常：
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````
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docker run hello-world
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````
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你应该看到类似这样的输出，表明 docker 成功运行：
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![][4]
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恭喜！ 你已经在 Arch Linux 上成功安装了 Docker。
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### 可选：安装 Docker Compose
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Docker Compose 已经成为 Docker 不可或缺的一部分。它允许你管理多个容器应用。
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较早的经典 compose 由 `docker-compose` Python 软件包提供。Docker 还将其移植到 Go 中，并通过 `docker compose` 提供，但该软件包附带 [Docker Desktop][5]。
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在这个阶段，我建议使用经典的 docker-compose 插件并使用以下命令安装它：
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````
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sudo pacman -S docker-compose
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````
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![][6]
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### 故障排除技巧
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以下是你可能遇到的一些常见问题以及可能的解决方案：
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#### Tab 补全不适用于 docker 子命令
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如果你想对 docker 命令选项使用 tab 补全（例如将 im 补全到 images 等），请安装 bash-completion 包：
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````
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sudo pacman -S bash-完成
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````
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关闭终端并启动一个新终端。你现在应该能够通过 Docker 命令使用 tab 补全功能。
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#### 无法连接到 Docker 守护进程错误
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如果你看到以下错误：
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````
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docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
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See 'docker run --help'.
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````
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那是因为 docker 守护进程没有运行。参考步骤 2，启动 docker 服务，确保其正在运行并启用它，以便 docker 守护进程在每次启动时自动运行。
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````
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sudo systemctl start docker.service
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sudo systemctl enable docker.service
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````
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#### 尝试连接到 Docker 守护程序套接字时权限被拒绝
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如果你看到此错误：
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````
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ddocker: permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/create": dial unix /var/run/docker.sock: connect: permission denied.
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See 'docker run --help'.
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````
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这是因为你需要使用 sudo 运行 docker 命令，或者将用户添加到 docker 组以在不使用 sudo 的情况下运行 docker 命令。
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我希望这篇简短的文章可以帮助你在 Arch Linux 上运行 Docker。
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--------------------------------------------------------------------------------
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via: https://itsfoss.com/install-docker-arch-linux/
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作者：[Abhishek Prakash][a]
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选题：[lujun9972][b]
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译者：[geekpi](https://github.com/geekpi)
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||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]: https://itsfoss.com/author/abhishek/
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[b]: https://github.com/lujun9972
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[1]: https://itsfoss.com/pacman-command/
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[2]: https://itsfoss.com/content/images/2023/10/installing-docker-arch-linux.png
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[3]: https://itsfoss.com/content/images/2023/10/start-docker-daemon-arch-linux.png
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[4]: https://itsfoss.com/content/images/2023/10/docker-running-successfully-arch-linux.png
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[5]: https://www.docker.com/products/docker-desktop/
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[6]: https://itsfoss.com/content/images/2023/10/install-docker-compose.png
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