Getting error when trying to build kaniko with Podman

[maffka123]

Hello,

I am gettitng an error when building this Dockerfile inside a Podman container in Kubernetes (like this).

The error says:
STEP 2/8: RUN --mount=from=busybox,dst=/usr/ ["busybox", "sh", "-c", "mkdir -p /kaniko && chmod 777 /kaniko"]
process failed to start with error: exec: "busybox": executable file not found in $PATH
process exited with error: exec: not started
subprocess exited with status 1
Error: building at STEP "RUN --mount=from=busybox,dst=/usr/ busybox sh -c mkdir -p /kaniko && chmod 777 /kaniko": exit status 1

Is there a way to fix it?

[nalind]

That's a way to create a directory in a scratch container that I haven't seen before, will have to remember that one.
It looks like you've found a bug in the chroot isolation handler that the podman image is configured to use by default.
Since it's a privileged container, you might be able to set BUILDAH_ISOLATION=oci or pass --isolation=oci to your build command, which will get it to use runc or crun, until this is fixed.

[nalind]

... or change "busybox" to "/usr/bin/busybox" as a workaround.

[maffka123]

Hi @nalind , thank you very much for your kind reply! --isolation=oci did help!