'extensions': unknown type: "docker_observer" for id: "docker_observer"

[eratio08]

Hello,

maybe someone with some more xp can spot my mistake.
I'm trying to setup the docker_observer in a docker compose setup, but it fails with the following error

 * error decoding 'extensions': unknown type: "docker_observer" for id: "docker_observer" (valid values: [asapclient bearertokenauth http_forwarder jaegerremotesampling oauth2client k8s_observer awsproxy headers_setter health_check host_observer memory_ballast basicauth oidc pprof sigv4auth zpages file_storage])

The config of the extension is done with

extensions:
  docker_observer:
    api_version: 1.42

receivers:
  receiver_creator:
    ...
service:
  extensions: [ docker_observer ]
  pipelines:
    ...

I'm using otel/opentelemetry-collector-contrib:latest

According to the docs it should be done like this.
What am I missing?

[atoulme]

It's not listed in https://github.com/open-telemetry/opentelemetry-collector-releases/blob/main/distributions/otelcol-contrib/manifest.yaml. Please open an issue against that repository if you want it included.