exec docker运行时docker中的环境变量 [英] Environment variables in docker when exec docker run

问题描述

泊坞窗中的环境变量有问题. 当我运行命令时:

I've got a problem with environment variables in docker. When I run command:

$ docker run ubuntu /bin/bash -c "echo $HOME"

我有回应:

/Users/bylek

但是当我跑步时:

$ docker run -it ubuntu /bin/bash

然后:

root@5e079c47affa:/# echo $HOME

我有:

/root

第二个响应是正确的.为什么第一个命令从主机返回$ HOME值?

Second response is correct. Why first command return $HOME value from my host?

推荐答案

echo $HOME进行评估，因为您没有转换为bash正确的语法.它是Linux，因此您需要单引号.

echo $HOME is being evaluated on your host because you haven't got the syntax of the switch to bash correct. It's Linux so you need single quotes.

尝试将单引号替换为双引号.

Try replacing your double quotes with single quotes.

例如这就是我得到的:

bash-3.2$  docker run ubuntu /bin/bash -c 'echo $HOME'
/root

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