本文介绍了Dockerfile中的“ COPY”和“ ADD”命令有什么区别?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

Dockerfile中的 COPY ADD 命令之间有什么区别,何时使用

What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the other?

COPY <src> <dest>





ADD <src> <dest>




推荐答案

您应检查和文档以更详细地描述其行为,但简而言之,主要区别在于 ADD 可以完成 COPY

You should check the ADD and COPY documentation for a more detailed description of their behaviors, but in a nutshell, the major difference is that ADD can do more than COPY:


  • ADD 允许< src> 作为URL

  • 请参阅下面的注释, ADD 指出:

  • ADD allows <src> to be a URL
  • Referring to comments below, the ADD documentation states that:

请注意,建议使用 COPY ,其中<$ c不需要$ c> ADD 。否则,有一天(当您打算将 keep_this_archive_intact.tar.gz 复制到其中时,您(因为您必须查找此答案),您可能会感到惊讶。您的容器,而是将内容喷到文件系统上。

Note that the Best practices for writing Dockerfiles suggests using COPY where the magic of ADD is not required. Otherwise, you (since you had to look up this answer) are likely to get surprised someday when you mean to copy keep_this_archive_intact.tar.gz into your container, but instead, you spray the contents onto your filesystem.

这篇关于Dockerfile中的“ COPY”和“ ADD”命令有什么区别?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!

08-30 12:54