Image build failed in Openshift

[fsc12]

Actual behavior
Trying to build images in Openshift results in an error:

....
INFO[0004] Extracting layer 0
DEBU[0005] creating dir /
error building image: error building stage: chmod /: operation not permitted

Expected behavior
The build successfully executes.

To Reproduce
Steps to reproduce the behavior:

1. Create a secret in Openshift
   oc create secret generic kaniko-secret --from-file=kaniko-secret.json

2. Create a ConfigMap which contains the Dockerfile
   oc create configmap config-docker --from-file=Dockerfile

3. Create a ConfigMap which contains x.509-certificates
   oc create configmap ca-certificates --from-file=cert.crt

4.) Create the Pod
oc create -f pod.yaml

pod.yaml

5.) Dockerfile

Dockerfile

The error occurred for all base-Images I've testet (RHEL7, Debian9, Centos7).

[xanonid]

Probably, the issue is that in OpenShift per-default only non-root containers are allowed. See #105 .

[priyawadhwa]

Seems like there is some documention around running you container as root in OpenShift (which would be required to build that Dockerfile with kaniko)

[bobcatfish]

Going to assume those docs resolved the issue, plz reopen if not @fsc12 !

[unresolv]

I have made an openshift-compatible version of the executor image here which seems to work for me (OKD 3.11): https://github.com/ContainerSolutions/dockerfiles/tree/master/kaniko-openshift

No changes necessary to UID, this image should handle the default OS UID magic.

I have also based it on alpine to make it work with Jenkins and to easily add CA certificates (or anything else you might need.)
It is not maintained so if you intend to use it please copy & paste the files and maintain it.