Please approve post review

I guess this should just work. It's similar to prometheus/prometheus#6486 .

@simonpasquier you reviewed that PR back in the days. Do you see any concerns here?

I'll merge for now, but wait a bit before cutting a release.

For posteriority:

For the push to quay.io to work, I had to manually create the repository https://quay.io/repository/prometheus/pushgateway-linux-s390x

Pushgateway tar file is already s390x & same is being used in Quay . So this change was Just to build the image for pushgateway for s390x . This build is not for Quay

Thanks for the update . I can see s390x image for master release . Is there any plan to keep it as part of other release ex latest , etc

I will cut a new release in the next days, which will get an image than for an official release.

I do not plan to add images to older releases. There haven't been any invasive changes in the PGW for years, so I don't anticipate substantial need to run older versions instead of the current one.