how to do docker in docker kind of thing with RD and nerdctl rancher-users #rancher-desktop

Title

polite-engineer-55788

06/06/2022, 3:42 AM

how to do docker in docker kind of thing with RD and nerdctl ?

say I need to run/start a new container from another container

@fast-garage-66093 @best-city-49378 @best-accountant-68201 thoughts or pointers ?

IMHO the example here gives me a clue https://github.com/containerd/containerd/blob/main/docs/getting-started.md

I build the nerdctl image and ran it with

--privileged

mode and was able to run a container from within the

nerdctl

container

but I am curious to know if I can share the namespaces and containers from RD with customer container from which I will spin/run another container

so that the

nerdctl run

from the container need not have to download the images every time

posted as question here https://github.com/containerd/nerdctl/discussions/1090

best-city-49378

06/06/2022, 10:48 AM

I don't know about rancher desktop, but for lima it was preferred to just run things on the VM (like k8s) rather than use nested containers (like kind)

polite-engineer-55788

06/06/2022, 12:40 PM

yeah k8s is the preferred way but as part of CI thing that I am working with I need to have a container trigger running of another container for build purpose

actually by building

nerdctl

as container image and used it to do the container in container. It did work well but I dont how to share the storage so that it can reuse existing container images

jolly-forest-99711

06/07/2022, 3:51 PM

If I understand what you're doing, you can re-use images by bind mounting the

nerdctl

image directory. I believe it's listed here: https://github.com/containerd/nerdctl/blob/master/docs/dir.md

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