Continuous integration 如何为BuildKite跨pipeline.yml添加环境变量？

BuildKite文档建议您可以归档，但实际上并没有告诉您如何归档

我试过这样的方法：

CONCURRENCY=10

steps:

  - label: ":rocket: Let's kick this pig"
    concurrency: $CONCURRENCY

  - label: ":explosion: All out of bubble-gum"
    concurrency: $CONCURRENCY

---

但是我得到了一个语法错误。

在

env

块中指定它们，类似于为步骤指定环境变量

env:
   CONCURRENCY: 10

steps:

  - label: ":rocket: Let's kick this pig"
    concurrency: $CONCURRENCY

  - label: ":explosion: All out of bubble-gum"
    concurrency: $CONCURRENCY

---

这是有意义的，一路向下移动。

是否可以将环境变量识别为shell脚本的结果？