use minikube image load for containerd

[medyagh]

No description provided.

[aaron-prindle]

From reading through the linked minikube issue information this is what I understand to be the tasks and verification required here:

• Modify how skaffold builds images w/ minikube to use the minikube image load command (only when containerd is used?)
  • I believe this would require creating a new builder and setting that builder to be used when skaffold identifies a minikube cluster is being used w/ the required version
• Validation that this works correctly should be done as test added to the minikube+skaffold integration test, tracked here - add integration test with minikube in kokoro  #5737

Please feel free to add to the bug here w/ any tasks, files-to-touch and validation requirements if something here is incorrect/missing, thanks!

[aaron-prindle]

Is this related to the work required for #5739? Would it make sense to put this information as a task there if so? (and mark this as dupe)

[afbjorklund]

This solution would be needed, if wanting to load an image from the local docker daemon without using a registry...

minikube image build (#5739) is used, when wanting to transform a local "build context" (Dockerfile and friends)
i.e. same as docker build, but also for containerd and cri-o. this would perform the build in the minikube cluster

minikube image load (#5773) is used, when wanting to import a local tarball (with the manifest and the layers, etc)
i.e. same as docker load, but also for containerd and cri-o. this would have performed the build outside the cluster

It would make sense to have a "minikube" builder, same as the current "docker" builder (which doesn't support containerd)

Container Runtime	Docker support	Minikube support
docker	yes	yes (docker)
cri-o	yes, with manual steps	yes (podman)
containerd	no	yes (ctr/buildctl)

At the moment, the "custom build script" is also hard-coded to docker

[aaron-prindle]

minikube image support has been removed from the 1.33 milestone and is currently not prioritized in the skaffold roadmap in the near term