Hi, Loving the project. One issue I'm running into when setting up Kaniko to build docker images is that it seems the shell the container is looking for is hardcoded to either "sh" or "cmd". There's containers that have shells at different paths, for example in Kaniko its /busybox/sh. It would be good to have the option to manually configure the shell location for this step.

For reference, I'm running builds via default kubernetes executor and without this capability, you'll see the job pod fail to start with the following error:

Error: failed to create containerd task: failed to create shim: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "sh": executable file not found in $PATH: unknown