Dockerfiles: Legacy key/value format with whitespace separator should not be used

[jiridanek]

"ENV key=value" should be used instead of legacy "ENV key value" format

2024/12/11 11:37:32 LegacyKeyValueFormat%!(EXTRA string=Legacy key/value format with whitespace separator should not be used, string=https://docs.docker.com/go/dockerfile/rule/legacy-key-value-format/, string="ENV key=value" should be used instead of legacy "ENV key value" format, []parser.Range=[{{22 0} {22 0}}])

[andyatmiami]

I am working on this as a byproduct of the refactoring we are doing for Konflux migration.

[jiridanek]

Personally, I'd merge it (the improved version of #906 that you've already put together). It is innocuous change, and (ideally) we should try to make progress one small PR at a time...

but, I do understand your reluctance, as this can easily cause annoying merge conflicts in whatever you're working on.

So yeah, let's andy handle it.

[andyatmiami]

FWIW - change will initially appear on https://github.com/opendatahub-io/notebooks/tree/refactor/konflux-migration

and I hope to have something pushed by tomorrow 🤞