如何在码头组合文件中逃避$美元符号？ [英] How can I escape a $ dollar sign in a docker compose file?

问题描述

我有一个YAML标量，当我尝试评估我的 docker-compose.yml 文件时，会抛出以下错误：

错误：
服务time_service中的环境选项的内插格式无效：$ {Time.now}

< blockquote>

YAML：

  --- 
 version：'2 '
 services：
 time_service：
 build：。 
环境：
 TIME：$ {Time.now}
  

我可以保持与书面相同的字符串输出，但是避免将docker-compose解释为错误的字符串插值？

解决方案

找到在％字符的建议的答案， in-yaml>这篇文章

它需要一个双重美元符号 $$ 。 p>

所以我需要$$ {Time.now}，评估为$ {Time.now}

I have a YAML scalar that is throwing the following error when I try to evaluate my docker-compose.yml file:

ERROR: Invalid interpolation format for "environment" option in service "time_service": "${Time.now}"

YAML:

---
version: '2'
services:
  time_service:
    build: "."
    environment:
      TIME: "${Time.now}"

How can I maintain the same string output as written, but avoid having the docker-compose interpret it as faulty string interpolation?

解决方案

Found the answer by copying the suggestion for % characters in this post

It requires a double dollar sign $$.

So I needed "$${Time.now}", which evaluates to "${Time.now}"

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