Azure App Service（Linux）环境下ASP.NET Core应用的环境变量问题

我手头有个ASP.NET Core应用，目前配置文件和Program类的代码如下，想咨询关于环境变量配置的相关问题：

配置文件详情 #

appsettings.json #

...
"AzureOpenAI": {
    "EndPoint": "https://PRODUCTION.openai.azure.com/",
    "ApiKey": "PRODUCTION-API-KEY"
},
"ServiceBus": {
    "ConnectionString": "PRODUCTION-CONNECTION-STRING",
    "QueueNames": {
      "Files": "files",
      "SessionCallBack": "sessionCallBack"
   }
}
...

appsettings.staging.json #

...
"AzureOpenAI": {
    "EndPoint": "https://STAGING.openai.azure.com/",
    "ApiKey": "STAGING-API-KEY"
},
"ServiceBus": {
    "ConnectionString": "STAGING-CONNECTION-STRING"
}
...

Program类代码片段 #

...
var env = builder.Environment.EnvironmentName;
var...

备注：内容来源于stack exchange，提问作者Imran Sh