linux/arm64/v8 for legacy images

[s50600822]

Description

For example, on an M1 mac:

docker pull elasticsearch:6.8.15
6.8.15: Pulling from library/elasticsearch
no matching manifest for linux/arm64/v8 in the manifest list entries

It would cause issue like Netflix/conductor#2975, or simply surprises people who are on Apple Processor when they work on elasticsearch:6.8.15. I wonder if the image could be rebuilt to support the new architecture for the sake of resilience.
If it's not an option, it's fine to close this.

[andreidan]

Thanks very much for your interest in Elasticsearch.

Your issue relates to Elasticsearch version 6.8.15 which has passed end-of-life, so I am closing this. Linking here the supported OS matrix for completeness.