Do not hardcode GOARCH/GOOS

[yselkowitz]

What this PR does / why we need it:
This is needed for multi-arch enablement of this container image.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Release note:

NONE

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[yselkowitz]

/retest

[JoelSpeed]

LGTM, I am curious though, how will the arch be determined? Will there be multiple versions of the dockerfile or will it be based on the system it's built on and pulling the correct arch of the release golang builder?

[yselkowitz]

Manifest-list images automatically pull from the native architecture, and golang automatically compiles for the native architecture.

[JoelSpeed]

So this would mean we would have to build an arm image on an arm box? Windows on a windows box etc?
Non blocking, just for my own curiousity, but is it possible to publish all of the arch images from the same machine? Cross building?

/lgtm

[yselkowitz]

So this would mean we would have to build an arm image on an arm box? Windows on a windows box etc?

Yes.

Non blocking, just for my own curiousity, but is it possible to publish all of the arch images from the same machine? Cross building?

Not feasibly.

[yselkowitz]

/retest

[yselkowitz]

/retest

[yselkowitz]

/retest

[openshift-ci-robot]

@yselkowitz: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/e2e-azure-operator	23017bd	link	/test e2e-azure-operator

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[yselkowitz]

Obsoleted by ab01fde