通过 bash 命令设置 gitlab-ci.yml 变量
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/49026724/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Set gitlab-ci.yml variable via bash command
提问by Karl Morrison
variables:
CUSTOM_NODE_VERSION: '$${cat .nvmrc}'
I'd like for the variable CUSTOM_NODE_VERSIONto be populated via the contents of the .nvmrcfile (which is located in the projects root directory). How does one do this in the gitlab-ci.ymlfile?
我希望CUSTOM_NODE_VERSION通过.nvmrc文件的内容（位于项目根目录中）填充变量。如何在gitlab-ci.yml文件中做到这一点？
The example above isn't working. I've also tried the following:
上面的例子不起作用。我还尝试了以下方法：
CUSTOM_NODE_VERSION: $(cat .nvmrc)->(cat .nvmrc)CUSTOM_NODE_VERSION: "$(cat .nvmrc)"->(cat .nvmrc)CUSTOM_NODE_VERSION: '$(cat .nvmrc)'->(cat .nvmrc)CUSTOM_NODE_VERSION: ${cat .nvmrc}-> (empty string)CUSTOM_NODE_VERSION: '${cat .nvmrc}'-> (empty string)CUSTOM_NODE_VERSION: "${cat .nvmrc}"-> (empty string)
CUSTOM_NODE_VERSION: $(cat .nvmrc)->(cat .nvmrc)CUSTOM_NODE_VERSION: "$(cat .nvmrc)"->(cat .nvmrc)CUSTOM_NODE_VERSION: '$(cat .nvmrc)'->(cat .nvmrc)CUSTOM_NODE_VERSION: ${cat .nvmrc}->（空字符串）CUSTOM_NODE_VERSION: '${cat .nvmrc}'->（空字符串）CUSTOM_NODE_VERSION: "${cat .nvmrc}"->（空字符串）
It works if I put it in the before_scriptlike the following:
如果我将其放入如下before_script所示，它会起作用：
before_script:
- CUSTOM_NODE_VERSION=$(cat .nvmrc)
But it isn't accessible to the following part of the gitlab-ci.ymlfile:
但是gitlab-ci.yml文件的以下部分无法访问它：
lint:
stage: Test
image: node:$CUSTOM_NODE_VERSION
回答by Stefan van Gastel
There are some parts of .gitlab-ci.ymlwhere variables are usable and some parts where they are not.
还有一些地方.gitlab-ci.yml，其中的变量是可用的和一些地方，他们不是。
The .ymlfile is parsed in Gitlab itself and then the commands are executed by the runner. So setting a variable that is used in the job config is not possible at this point. You could use a pre-defined Secret Variable although that doesnot seem to fix your need.
该.yml文件在 Gitlab 本身中解析，然后命令由运行程序执行。因此，此时无法设置作业配置中使用的变量。您可以使用预定义的秘密变量，尽管这似乎不能满足您的需求。
There are issues tracking the documentation of what you can and cannot do:
跟踪您可以做什么和不能做什么的文档存在问题：
