构建 docker 映像时是否可以显示“WORKDIR"? [英] Is it possible to show the `WORKDIR` when building a docker image?

问题描述

我们在构建 docker 映像时遇到了 WORKDIR 问题.是否可以打印 WORKDIR 的值?

We have a problem with the WORKDIR when we building a docker image. Is it possible to print the value of WORKDIR?

我们试过了:

ECHO ${WORKDIR}

但是没有这样的指令ECHO

推荐答案

在构建过程中，Docker 没有内置的方法来打印 WORKDIR.您可以检查图像/图层的最终工作目录:

There's no builtin way for Docker to print the WORKDIR during a build. You can inspect the final workdir for an image/layer:

docker image inspect {image-name} | jq '.[].Config.WorkingDir'

可以通过打印 shells 默认工作目录来查看 Linux 容器构建步骤 workdir:

It's possible to view a Linux containers build steps workdir by printing the shells default working directory:

RUN pwd

或者shell经常将工作目录存放在PWD环境变量中

or the shell often stores the working directory in the PWD environment variable

RUN echo "$PWD"

如果您使用的是较新版本的 dockers BuildKit，则需要使用 --progress=plain

If you are using newer versions of dockers BuildKit, stdout will need to be enabled with --progress=plain

docker build --progress=plain . 

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