hoogenm/d2c.sh

Created February 21, 2022 20:48

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Docker Image to ContainerD

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d2c.sh

	d2c() {
	docker save "$1" \| ctr image import -
	}

hoogenm commented Feb 21, 2022

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Usage, to copy image tagged mycompany/mycontainer:v3 from local(ly built) Docker image to local ContainerD images:

source d2c.sh
d2c mycompany/mycontainer:v3

To then use the image in a Kubernetes yaml definition without pulling from registry, use the (same) tag, and imagePullPolicy: Never. With kubectl run use --image-pull-policy=Never to prevent pulling from registry.

For Kubernetes, works on local node only (i.e. only when pod is scheduled on the same node where d2c was executed, e.g. single node, or force scheduling of pod on same node, or have d2c executed on multiple nodes).

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