Read configuration from environment vars

[nor3th]

Hey

Are the docintel apps able to read custom configuration variables from the docker environment variable settings? This would spare having to adjust the configuration in the docker-compose.yml as well as the appsettings.json file.

Regards

[ancailliau]

Thanks for the suggestion. I'll see what can be done.

[wintamute]

The underlying asp.net core framework supports configuration via environment variables out of the box. So every option from the appsettings.json can also be configured via an env variable in docker-compose.yml. For nested options, you have to replace the curly braces with double underscores. Example:

{
    "ApplicationName" :  "DocIntel",
    "Email": {
        "EmailEnabled": false
    }
}

becomes in docker-compose:

  webapp:
    image: "docintelapp/webapp"
    container_name: docintel-dev-webapp
    ports:
      - 5005:80
    environment:
      - APPLICATIONNAME=DocIntel
      - EMAIL__EMAILENABLED=false

see also https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-7.0#evcp