Build and push stargz-snapshotter image usable as a kind node

[ktock]

#715

This commit adds a CI to push Kind node image to ghcr.io/stargz-containers/${VERSION}-kind ghcr.io/containerd/stargz-snapshotter:${VERSION}-kindnamespace on each release.

• Example: ghcr.io/ktock/stargz-snapshotter:0.0.0-kind
  • https://github.com/ktock/stargz-snapshotter/actions/runs/3234126466/jobs/5296849182

$ cat /tmp/kindconfig.yaml 
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
- role: worker
- role: worker
- role: worker
$ kind create cluster --config=/tmp/kindconfig.yaml --name stargz-demo --image ghcr.io/ktock/stargz-snapshotter:0.0.0-kind

[AkihiroSuda]

When fetch-depth != 1 probably you want ref: ${{ github.event.pull_request.head.sha }} too, otherwise you'll get a merge commit that does not actually exist on the repo.

https://github.com/actions/checkout#checkout-pull-request-head-commit-instead-of-merge-commit

[ktock]

Thank you for the review. Fixed to use fetch-depth == 1

[AkihiroSuda]

Suggested change

	name: Containerize
	name: kind image

or something else that is more descriptive

[ktock]

Fixed the name to Kind image.

[ktock]

This commit adds a CI to push Kind node image to ghcr.io/stargz-containers/${VERSION}-kind namespace on each release.

This looks like wrong... This workflow will to create the image at ghcr.io/containerd/stargz-snapshotter:${VERSION}-kind . (not stargz-containers)

cc @AkihiroSuda