Updates to ko builder design proposal to add implementation approach (#6046)
Updates to ko builder design proposal to add implementation approach (#6046)

* Updates to ko builder design proposal

Update resolved questions and add section for implementation approach.

* Elaborate on ko builder implementation approach

Add rough steps to Approach section.

* Update docs/design_proposals/ko-builder.md

Co-authored-by: Marlon Gamez <49658afb0625aacff79dc0a063d02864261e130c@google.com>
GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold