Docker image for fluentd-elasticsearch which was used in Kubernetes.
It's used now in the Kokuwa fluentd-elasticsearch Helm chart.
Docker repo: https://quay.io/repository/fluentd_elasticsearch/fluentd
Last version before removal in Kubernetes was: https://github.com/kubernetes/kubernetes/tree/9682b7248fb69733c2a0ee53618856e87b067f16/cluster/addons/fluentd-elasticsearch