当子级定义另一个父级映像时，Docker父级映像的入口点会发生什么？ [英] What happens to entrypoint of Docker parent image when child defines another one?

问题描述

比方说，我已经通过此Dockerfile构建了Docker镜像 parent ：

Let's say I've got the Docker image parent built by this Dockerfile:

FROM ubuntu
ENTRYPOINT ["parent-entry"]

现在我从此继承父级在我的子级图像中使用以下代码构建：

Now I inherit from this parent image in my child image built with this code:

FROM parent
ENTRYPOINT ["child-entry"]

据我测试，子图像的入口点覆盖了父映像。

As far as I have tested it the entrypoint of the child image overwrites the one in the parent image.

但是由于我是Docker的新手，所以我对此不确定。我的研究还没有得出令人满意的答案。那么上述假设是否正确？

But since I am new to Docker I am not sure about this. My research also hasn't yet resulted in a satisfying answer. So is the assumption above correct?

推荐答案

使用了最后一个入口点，仅使用了最后一个入口点。

The last entrypoint is used, only the last one.

您可以检查并在 Dockerfile ENTRYPOINT 的行c $ c>，并检查会发生什么情况。

You can check, put several lines with different ENTRYPOINT in your Dockerfile, and check what happens.

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