Support Postgres 12.x for s390X UBI Container

[dixonwhitmire]

We haven't been able to find an available Postgres 12.x for the 390x/Z platform.

Available options: https://www.postgresql.org/download/linux/redhat/

Our current image downloads a RPM - https://github.com/LinuxForHealth/images/blob/master/postgres/Dockerfile

The "official" image for Postgres which is supported:
Official Dockerfile: https://github.com/docker-library/postgres/tree/master/12

UBI 8 Image repos:
https://cdn-ubi.redhat.com/content/public/ubi/dist/ubi8/8/x86_64/baseos/os
https://cdn-ubi.redhat.com/content/public/ubi/dist/ubi8/8/x86_64/appstream/os
https://cdn-ubi.redhat.com/content/public/ubi/dist/ubi8/8/x86_64/codeready-builder/os/
(from https://access.redhat.com/articles/4238681)

One possible approach ? use a two stage builder image to build the "official" image and copy configs, binaries over to the UBI?

[ccorley]

That two-stage build process was fraught with peril when trying to build the dicom server - there was a huge amount of os-level config as part of the build that just didn't work well when copying the build result to the new image, at least in that case.

[dixonwhitmire]

A very good point! If we can't find anything in the repos perhaps we can "fork" the official docker file and update it for UBI use (microdnf vs yum/apt, etc) and just use that for our official build

[ccorley]

@dixonwhitmire I think we can close this.

[ccorley]

Moving to roadmap instead of closing it.