Add Dockerfile for building in ART

[ashwindasr]

Onboard to ART

[xperimental]

We have updated all our builds to Go 1.24 recently (the patch version is what we currently build with, don't know if this is less explicit in ART):

Suggested change

	FROM golang:1.23 AS builder
	FROM golang:1.24.6 AS builder

[ashwindasr]

We replace the golang builds with whats defined in the config, whose source is here, so regardless of the value defined here, go 1.24.6 will be used in production.

So golang:1.24 should be enough. In the future, we will raise PRs to bump the golang builds from golang:1.23 to golang:1.24 if a similar thing should happen

[ashwindasr]

updated to 1.24 for now for clarity eae1f75

[xperimental]

opa-openshift and observatorium-api are built from the same source in all 6.y releases. Is this something that we need to change in ART, for example by having per-release branches again?

[xperimental]

See above comment.

[xperimental]

This COPY command works in the context of our Konflux build where the Dockerfile is one level up from the rest of the source... will this be the same for the ART build?

[ashwindasr]

thanks for the catch updated in eae1f75

[xperimental]

I think these are an artifact of CPaaS and can be removed:

Suggested change

	ENV BUILD_VERSION=0.1.0
	ENV OS_GIT_MAJOR=0
	ENV OS_GIT_MINOR=1
	ENV OS_GIT_PATCH=0

[ashwindasr]

removed in eae1f75

[xperimental]

I think this experiment is only available in the Red Hat custom build of Go and not in the library/golang image.