You can pull information via one or more environment variables by providing the name of the variable for a given containerName.

env: # Optional.  - parameter: region # Required - Defined by the scale trigger  name: my-env-var # Required.  containerName: my-container # Optional. Default: scaleTargetRef.envSourceContainerName of ScaledObject 

Assumptions: containerName is in the same resource as referenced by scaleTargetRef.name in the ScaledObject, unless specified otherwise.