如何将ARG值传递给ENTRYPOINT？ [英] How to pass ARG value to ENTRYPOINT?

问题描述

Docker 1.9允许将参数传递给dockerfile。请参见链接： https://docs.docker.com/engine/reference/builder/# arg

Docker 1.9 allows to pass arguments to a dockerfile. See link: https://docs.docker.com/engine/reference/builder/#arg

我如何在ENTRYPOINT指令中传递相同的标签？

How can i pass the same arugments within ENTRYPOINT Instruction??

我的dockerfile具有

My dockerfile has

ARG $ Version = 3.1

ENTRYPOINT /tmp/folder-$Version/sample.sh start

ARG $Version=3.1
ENTRYPOINT /tmp/folder-$Version/sample.sh start

在使用上述dockerfile创建容器时出现错误。
请提出在ENTRYPOINT指令中指定参数的正确方法是什么？

I am getting an error while creating container with above dockerfile. Please suggest what is the correct way to specify the argument within ENTRYPOINT instruction??

推荐答案

像 Blake Mitchell 说，您不能在 ENTRYPOINT 中使用 ARG 。但是，您可以将 ARG 用作 ENV 的值，这样就可以将其与 ENTRYPOINT ：

Like Blake Mitchell sais, you cannot use ARG in ENTRYPOINT. However you can use your ARG as a value for ENV, that way you can use it with ENTRYPOINT:

Dockerfile

ARG my_arg
ENV my_env_var=$my_arg

ENTRYPOINT echo $my_env_var

并运行：

docker build --build-arg "my_arg=foo" ...

这篇关于如何将ARG值传递给ENTRYPOINT？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！