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[#]: subject: "How I switched from Docker Desktop to Colima"
[#]: via: "https://opensource.com/article/22/9/docker-desktop-colima"
[#]: author: "Michael Anello https://opensource.com/users/ultimike"
[#]: collector: "lkxed"
[#]: translator: "geekpi"
[#]: reviewer: " "
[#]: publisher: " "
[#]: url: " "
How I switched from Docker Desktop to Colima
======
Colima is a Docker Desktop alternative for macOS and Linux that's now supported by DDEV.
![Getting started with Perlbrew][1]
Image by: freephotocc via Pixabay CC0
[DDEV][2] is an open source tool that makes it simple to get local PHP development environments up and running within minutes. It’s powerful and flexible as a result of its per-project environment configurations, which can be extended, version controlled, and shared. In short, DDEV aims to allow development teams to use containers in their workflow without the complexities of bespoke configuration.
DDEV replaces more traditional AMP stack solutions (WAMP, MAMP, XAMPP, and so on) with a flexible, modern, container-based solution. Because it uses containers, DDEV allows each project to use any set of applications, versions of web servers, database servers, search index servers, and other types of software.
In March 2022, the DDEV team [announced support for C][3][olima][4], an open source Docker Desktop replacement for macOS and Linux. [Colima][5] is open source, and by all reports it’s got [performance gains][6] over its alternative, so using Colima seems like a no-brainer.
### Migrating to Colima
First off, Colima is *almost* a drop-in replacement for Docker Desktop. I say *almost* because some reconfiguration is required when using it for an existing DDEV project. Specifically, databases must be reimported. The fix is to first export your database, then start Colima, then import it. Easy.
Colima requires that either the Docker or [Podman][7] command is installed. On Linux, it also requires Lima.
Docker is installed by default with Docker Desktop for macOS, but it’s also available as a stand-alone command. If you want to go 100% pure Colima, you can uninstall Docker Desktop for macOS, and install and configure the Docker client independently. [Full installation instructions can be found on the DDEV docs site][8].
![An image of the container technology stack.][9]
Image by: (Mike Anello,CC BY-SA 4.0)
If you choose to keep using both Colima and Docker Desktop, then when issuing docker commands from the command line, you must first specify which container you want to work with. More on this in the next section.
### Install Colima on macOS
I currently have some local projects using Docker, and some using Colima. Once I understood the basics, it’s not too difficult to switch between them.
1. To get started, install Colima using Homebrew `brew install colima`
2. ddev poweroff (just to be safe)
3. Next, start Colima with `colima start `--cpu` 4 `--memory` 4.` The --cpu and --memory options only have to be done once. After the first time, only `colima start` is necessary.
4. If you’re a DDEV user like me, then you can spin up a fresh Drupal 9 site with the usual `ddev` commands (ddev config, ddev start, and so on.) It’s recommended to enable DDEV’s mutagen functionality to maximize performance.
### Switching between a Colima and Docker Desktop
If you’re not ready to switch to Colima wholesale yet, it’s possible to have both Colima and Docker Desktop installed.
1. First, poweroff ddev:ddev poweroff
2. Then stop Colima: `colima stop`
3. Now run `docker context use `default`` to tell the Docker client which container you want to work with. The name default refers to Docker Desktop for Mac. When `colima start` is run, it automatically switches Docker to the `colima` context.
4. To continue with the default (Docker Desktop) context, use the `ddev start` command.
Technically, starting and stopping Colima isn’t necessary, but the `ddev poweroff` command when switching between two contexts is.
Recent versions of Colima revert the Docker context back to `default` when Colima is stopped, so the `docker context use default` command is no longer necessary. Regardless, I still use `docker context show` to verify that either the `default` (Docker Desktop for Mac) or `colima` context is in use. Basically, the term `context` refers to which container provider the Docker client routes commands to.
### Try Colima
Overall, I’m liking what I see so far. I haven’t run into any issues, and Colima-based sites seem a bit snappier (especially when DDEV’s Mutagen functionality is enabled). I definitely foresee myself migrating project sites to Colima over the next few weeks.
*This article originally appeared on the* [DrupalEasy blog][10] *and is republished with permission.*
--------------------------------------------------------------------------------
via: https://opensource.com/article/22/9/docker-desktop-colima
作者：[Michael Anello][a]
选题：[lkxed][b]
译者：[译者ID](https://github.com/译者ID)
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://opensource.com/users/ultimike
[b]: https://github.com/lkxed
[1]: https://opensource.com/sites/default/files/lead-images/coffee_cafe_brew_laptop_desktop.jpg
[2]: https://github.com/drud/ddev
[3]: https://ddev.com/ddev-local/docker-desktop-alternatives-arrive-for-ddev-colima/
[4]: https://ddev.com/ddev-local/docker-desktop-alternatives-arrive-for-ddev-colima/
[5]: https://github.com/abiosoft/colima
[6]: https://ddev.com/ddev-local/docker-desktop-and-colima-benchmarking-on-macos/
[7]: https://opensource.com/article/22/2/start-running-containers
[8]: https://ddev.readthedocs.io/en/stable/users/docker_installation/#macos-installation-colima
[9]: https://opensource.com/sites/default/files/2022-09/docker-desktop-colima.png
[10]: https://www.drupaleasy.com/news

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[#]: subject: "How I switched from Docker Desktop to Colima"
[#]: via: "https://opensource.com/article/22/9/docker-desktop-colima"
[#]: author: "Michael Anello https://opensource.com/users/ultimike"
[#]: collector: "lkxed"
[#]: translator: "geekpi"
[#]: reviewer: " "
[#]: publisher: " "
[#]: url: " "
我如何从 Docker Desktop 切换到 Colima
======
Colima 是 macOS 和 Linux 的 Docker 桌面替代品，它现在由 DDEV 支持。
![Getting started with Perlbrew][1]
图片来源：freephotocc 在 Pixabay CC0 下发布
[DDEV][2] 是一个开源工具，可以在几分钟内轻松启动和运行本地 PHP 开发环境。由于其每个项目的环境配置可以扩展、版本控制和共享，所以它很强大和灵活。简而言之，DDEV 旨在允许开发团队在其工作流程中使用容器，而无需复杂的定制配置。
DDEV 用灵活、现代、基于容器的解决方案取代了更传统的 AMP 栈解决方案（WAMP、MAMP、XAMPP 等）。因为它使用容器，DDEV 允许每个项目使用任何一组应用、Web 服务器版本、数据库服务器、搜索索引服务器和其他类型的软件。
2022 年 3 月，DDEV 团队[宣布支持 Colima][3]，这是 macOS 和 Linux 的开源 Docker 桌面替代品。 [Colima][5] 是开源的，据所有报告显示，它比其替代方案获得了[性能提升][6]，所以使用 Colima 似乎是一个没有问题的选择。。
### 迁移到 Colima
首先，Colima *几乎*是 Docker Desktop 的替代品。我说*几乎*是因为在将它用于现有的 DDEV 项目时需要重新配置。具体来说，必须重新导入数据库。解决方法是先导出数据库，然后启动 Colima，然后再导入。很简单。
Colima 要求安装 Docker 或 [Podman][7] 命令。在 Linux 上，它还需要 Lima。
Docker 默认随 Docker Desktop for macOS 一起安装，但它也可以作为独立命令使用。如果你想要 100% 纯 Colima，你可以卸载 Docker Desktop for macOS，并独立安装和配置 Docker 客户端。[完整的安装说明可以在 DDEV 文档站点上找到][8]。
![容器技术栈图片。][9]
图片来源：（Mike Anello，CC BY-SA 4.0）
如果你选择继续使用 Colima 和 Docker Desktop，那么在命令行执行 docker 命令时，你必须首先指定要使用的容器。下一节将对此进行更多介绍。
### 在 macOS 上安装 Colima
我目前有一些使用 Docker 的本地项目，还有一些使用 Colima。当我了解了基础知识，在它们之间切换就不难了。
1. 开始使用 Homebrew `brew install colima` 安装 Colima
2. ddev poweroff（为了安全起见）
3. 接下来，使用 `colima start --cpu 4 --memory 4` 启动 Colima， --cpu 和 --memory 选项只需执行一次。第一次之后，只需要 `colima start`。
4. 如果你像我一样是 DDEV 用户，那么你可以使用常用的 `ddev` 命令（ddev config、ddev start 等）启动一个全新的 Drupal 9 站点。建议启用 DDEV 的 mutagen 功能以最大化性能。
### 在 Colima 和 Docker Desktop 之间切换
如果你还没有准备好使用 Colima，你可以同时安装 Colima 和 Docker Desktop。
1. 首先关闭 ddev：ddev poweroff
2. 然后停止Colima：`colima stop`
3. 现在运行 `docker context use default` 告诉 Docker 客户端你要使用哪个容器。默认名称是 Docker Desktop for Mac。当 `colima start` 运行时，它会自动将 Docker 切换到 `colima` 上下文。
4. 要继续使用默认（Docker Desktop）上下文，请使用 `ddev start` 命令。
从技术上讲，启动和停止 Colima 不是必需的，但是在两个上下文之间切换时的 `ddev poweroff` 命令是必要的。
Colima 停止时，最新版本的 Colima 会将 Docker 上下文恢复为 `default`，因此不再需要 `docker context use default` 命令。无论如何，我仍然使用 `docker context show` 来验证 `default`（Docker Desktop for Mac）或 `colima` 上下文是否正在使用。基本上，术语 `context` 指的是 Docker 客户端将命令发送到哪个容器提供者。
### 尝试 Colima
总的来说，我喜欢我目前所看到的。我没有遇到任何问题，而且基于 Colima 的网站看起来更快些（尤其是在启用 DDEV 的 Mutagen 功能时）。我肯定会预见自己在未来几周内将项目网站迁移到 Colima。
*本文最初出现发布在 [DrupalEasy 博客][10]并经许可重新发布。*
--------------------------------------------------------------------------------
via: https://opensource.com/article/22/9/docker-desktop-colima
作者：[Michael Anello][a]
选题：[lkxed][b]
译者：[geekpi](https://github.com/geekpi)
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://opensource.com/users/ultimike
[b]: https://github.com/lkxed
[1]: https://opensource.com/sites/default/files/lead-images/coffee_cafe_brew_laptop_desktop.jpg
[2]: https://github.com/drud/ddev
[3]: https://ddev.com/ddev-local/docker-desktop-alternatives-arrive-for-ddev-colima/
[5]: https://github.com/abiosoft/colima
[6]: https://ddev.com/ddev-local/docker-desktop-and-colima-benchmarking-on-macos/
[7]: https://opensource.com/article/22/2/start-running-containers
[8]: https://ddev.readthedocs.io/en/stable/users/docker_installation/#macos-installation-colima
[9]: https://opensource.com/sites/default/files/2022-09/docker-desktop-colima.png
[10]: https://www.drupaleasy.com/news