如何在 Dockerfile 中发表评论? [英] How do I make a comment in a Dockerfile?

问题描述

我正在编写一个 Dockerfile.有没有办法在这个文件中发表评论?

I am writing a Dockerfile. Is there a way to make comments in this file?

Docker 是否有一个注释选项，它会占用一行的其余部分并忽略它?

Does Docker have a comment option that takes the rest of a line and ignores it?

推荐答案

您可以在行首使用 # 来启动 comment(# 之前的空格是允许的):

You can use # at the beginning of a line to start a comment (whitespaces before # are allowed):

# do some stuff
RUN apt-get update 
    # install some packages
    && apt-get install -y cron

字符串中间的

# 被传递给命令本身，例如:

#'s in the middle of a string are passed to the command itself, e.g.:

RUN echo 'we are running some # of cool things'

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