awsecscontainermetrics receiver validation fails on contrib collector 0.126.0

[alexa-gt]

Hi there,

The otelbin tool does not seem to be able to validate the awsecscontainermetrics receiver on otelcol contrib 0.126.0 and above.

Error:

failed to create "awsecscontainermetrics" receiver for data type "metrics": unable to detect task metadata endpoint: no valid endpoint for environment variable ECS_CONTAINER_METADATA_URI_V4: endpoint is empty

It seems like the new contrib image forces a load of the ECS_CONTAINER_METADATA_URI_V4 variable which is not found.

Sample config that fails:

receivers:
  awsecscontainermetrics:
exporters:
  awsemf:
      namespace: 'ECS/ContainerMetrics/OpenTelemetry'
      log_group_name: '/ecs/containermetrics/opentelemetry'

service:
  pipelines:
      metrics:
          receivers: [awsecscontainermetrics]
          exporters: [awsemf]

https://www.otelbin.io/?#config=receivers%3A*N__awsecscontainermetrics%3A*Nexporters%3A*N__awsemf%3A*N______namespace%3A_*%22ECS%2FContainerMetrics%2FOpenTelemetry*%22*N______log*_group*_name%3A_*%22%2Fecs%2Fcontainermetrics%2Fopentelemetry*%22*N*Nservice%3A*N__pipelines%3A*N______metrics%3A*N__________receivers%3A_%5Bawsecscontainermetrics%5D*N__________exporters%3A_%5Bawsemf%5D*N%7E&distro=otelcol-contrib%7E&distroVersion=v0.129.1%7E