Confusion Over Docker Hub Fluentd vs Official

I am trying to work with Fluentd on `s390x`, but I am a little confused on which Docker Hub I should be pulling from.

On the top of this repo, you have a link pointing to https://hub.docker.com/r/fluent/fluentd. Which seems great, since you have the needed version tags that I want, but when I go to utilize this image I run into a standard arch issue.

`standard_init_linux.go:190: exec user process caused "exec format error"`

After doing some digging around I see you guys started the progress on getting Fluentd as one of the official images on Docker Hub. https://github.com/docker-library/official-images/pull/3724

Seems like this push was due support of `ppc64le` with help from @vaibhavsood. But looking at the official Docker Hub page, https://hub.docker.com/_/fluentd, it seems to only support a couple versions of Fluentd and lacks continuous updates like your other Docker Hub page.

I would really love to use Fluentd on s390x, but want access to new updated images and ideally older releases like `v1.2.6`.

@repeatedly Any input on this issue?

Additionally, there seems to be active talks and development around `ppc64le`, https://github.com/fluent/fluentd-docker-image/issues/120, thanks to @ghatwala. I would love talk about the possibilities of doing something similar to this but for `s390x`.

Start by comparing the fluent/fluentd and official _/fluentd Docker Hub images, then read the linked official-images pull request and fluentd-docker-image issue #120. Done means the project has a clear path to updated Fluentd images for s390x, including the requested older version tags, or documents why that support is not feasible.

Written by the indexing model from the issue text.