从linux样式路径转换时，Docker装入的卷在Windows路径的末尾添加; C [英] Docker mounted volume adds ;C to end of windows path when translating from linux style path

问题描述

尝试在Windows上安装docker映像时，我发现了一些有趣的怪异现象。

I've found some interesting weirdness when trying to mount a docker image on windows.

我创建了 .sh 脚本，用于装载项目文件夹以运行我们的开发人员环境映像。我希望每个开发人员都可以运行一个脚本，而不管他们的计算机如何。

I created a .sh script that does a mount of the project folder to run our developer environment image. I want one script that every dev can run, regardless of their machine. All it does is runs docker with the current project folder.

#!/usr/bin/env bash
docker run -it --rm -v D:\my\project\folder:/wkDir $IMAGE_TAG yarn dev

运行正常。现在的计划是从 npm 调用此脚本，因此我希望相对于当前文件夹可以使用此脚本。让我们尝试另一个版本。

Runs okay. Now the plan is to call this script from npm, so I'd like this to work relative to the current folder. Let's try another version.

docker run -it --rm -v $ PWD：/ wkDir $ IMAGE_TAG yarn dev

失败：

C:\Program Files\Docker\Docker\Resources\bin\docker.exe: Error response from 
daemon: Mount denied:
The source path "D:/my/project/folder;C"
doesn't exist and is not known to Docker.

Wat。什么是; C ，它是从哪里来的？

Wat. What's ;C and where did it come from?

所以我做 echo $ PWD 这给了我 / d / my / project / folder 。

有趣，所以 $ PWD 解析为linux路径格式的正确路径，似乎docker正在尝试将其转换为正确的Windows路径，除非存在此; C 似乎无处不在。而 \ 是 / ...

Interesting, so $PWD resolves to the correct path in linux path format, and it seems like docker is trying to translate from that to the correct windows path, except there's this ;C that appears out of nowhere. And the \ are /...

我在VSCode的终端git bash和powershell中得到了相同的结果。

I get the same result in VSCode's terminal git bash and powershell.

更新：我注意到在VSCode的powershell终端中运行 .sh ，会打开一个单独的 cmd.exe 控制台窗口，在git bash中运行脚本。因此，这可能是git bash问题。

Update: I noticed that running the .sh in VSCode's powershell terminal, opens a separate cmd.exe console window which seems to run the script in git bash. So this might be a git bash issue.

推荐答案

因此，通过一些额外的挖掘，我发现了这三个与git-bash相关的线程清理docker mount：

So with some extra digging I found these three threads, related to git-bash mucking up docker mount:

https://forums.docker.com/t/weird-error-under-git-bash-msys-solved/9210
https://github.com/moby/moby/issues/24029#issuecomment-250412919

当我查看mingw关于git-bash正在使用的路径转换的文档时，我发现此语法表：
http://www.mingw.org/wiki/Posix_path_conversion

When I look up mingw's documentation on the path conversion git-bash is using, I find this table of syntax: http://www.mingw.org/wiki/Posix_path_conversion

其中之一输出格式为： x; x; C：\MinGW\msys\1.0\x 。请注意其中的; C 。如果git-bash试图变得更聪明，则填充语法并以这种格式输出路径，这将对此进行解释。

One of which outputs in the format: x;x;C:\MinGW\msys\1.0\x. Note the ;C in it. If git-bash is trying to be clever, stuffing up the syntax and outputting a path with this format, this would explain it.

解决方案是避免路径转换，使用 / 作为前缀。因此，工作中的docker命令可以从git-bash中使用当前工作目录运行docker：

Solution is to escape the path conversion, using by prefixing with /. So the working docker command to run docker from git-bash with present working directory:

docker run -it --rm -v /${PWD}:/wkDir $IMAGE_TAG yarn dev

这篇关于从linux样式路径转换时，Docker装入的卷在Windows路径的末尾添加; C的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！