ensure push when already found image locally

[deitch]

Signed-off-by: Avi Deitcher avi@deitcher.net

- What I did

Fixed a bug. See this action which should have pushed everything out and skipped everything.

The way lkt pkg push works is, it checks before pushing if there is anything to push. The logic for that says, "if I built something, try and push it; if not, look in local cache and then, if found, try and push it."

When you put pkg push --nobuild, it explicitly does not build. But it also skips checking the cache. This means that --nobuild actually means "do not build or push", when you really meant, "do not build, but if something already is in the cache, go ahead and push it."

This fixes it so that the meaning is as expected.

- How I did it

Changes to pkglib/build.go

- How to verify it

CI

- Description for the changelog

Fix push --nobuild