Docker（Dockerfile）：从主机到容器共享目录 [英] Docker (Dockerfile): Share a directory from host to container

问题描述

我想知道是否可以使用Dockerfile从主机共享目录到Docker容器（共享卷）。

I would like to know if there's any way that I can share a directory from my host machine to the docker container (Shared Volume) using Dockerfile.

我了解我们可以在使用docker run时使用卷（-v选项）来做到这一点。但是我在使用Dockerfile指令时找不到任何方法。

I understand that we can do that using volumes (-v option) while using docker run. But I couldn't find any way by which I can do that while using an Instruction of Dockerfile.

我已经在Dockerfile中尝试了VOLUME指令，但未能成功。
以下是有关我的环境的一些详细信息：

I already tried VOLUME instruction in Dockerfile but couldn't succeed. Here's some details about my environment:

[me@myHost new]$ tree -L 1
.
|-- docker-compose.yml
|-- Dockerfile
|-- Shared  // This is the directory I wish to share with my containers.

`
我正在使用 docker-compose.yml 文件直到现在挂载此目录：

` I was using docker-compose.yml file to mount this directory till now:

volumes:
- ./Shared:/shared  # "Relative Path at the host":"Absolute Path at the container"

但是现在，由于某些原因，我需要将其安装在 Dockerfile 中。我已经尝试了以下操作，但未能成功（它正在/ shared创建一个新的空卷。）：

But now, due to some reasons, I need to mount it in Dockerfile. I already tried the following but couldn't succeed (It is creating a new empty volume at /shared.):

VOLUME ./Shared:/shared

我可以使用docker run并通过在容器中进行手动更改来保存图像，但我希望能在Dockerfile本身中做到这一点。

I could use docker run and save the image by making manual changes in the container, but I wished if I could do that in Dockerfile itself.

谢谢。

推荐答案

您无法使用Dockerfile中的命令挂载本地目录。您必须使用 docker run 或 docker run 的代理，例如 docker-compose 。

You can't mount a local directory using commands in a Dockerfile. You must do this with docker run, or a proxy to docker run like docker-compose.

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