zh-trans: add container-env-variables.md (#11180)

* zh-trans: add container-env-variables.md

zh-trans: add container-env-variables.md

* Update container-env-variables.md

* Update container-env-variables.md

* Update container-env-variables.md

content/zh/docs/reference/glossary/container-env-variables.md

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+---
+title: 容器环境变量
+id: container-env-variables
+date: 2018-04-12
+full_link: /docs/concepts/containers/container-environment-variables.md
+short_description: >
+  容器环境变量提供了运行容器化应用所必须的一些重要信息。
+
+aka: 
+tags:
+- fundamental
+---
+
+<!--
+---
+title: Container Environment Variables
+id: container-env-variables
+date: 2018-04-12
+full_link: /docs/concepts/containers/container-environment-variables.md
+short_description: >
+  Container environment variables are name=value pairs that provide useful information into containers running in a Pod.
+
+aka: 
+tags:
+- fundamental
+---
+-->
+
+<!--
+ Container environment variables are name=value pairs that provide useful information into containers running in a Pod.
+-->
+
+  容器环境变量提供了运行容器化应用所必须的一些重要信息。
+  
+<!--more-->
+<!--
+Container environment variables provide information that is required by the running containerized applications along with information about important resources to the {{< glossary_tooltip text="Containers" term_id="container" >}}. For example, file system details, information about the container itself, and other cluster resources such as service endpoints.
+-->
+
+  容器环境变量为运行中的容器化应用提供必要的信息，同时还提供与 {{< glossary_tooltip text="容器" term_id="container" >}} 重要资源相关的其他信息，例如：文件系统信息、容器自身的信息以及其他像服务端点（Service endpoints）这样的集群资源信息。