kaniko: error removing var/run to make way for new symlink: unlinkat

Actual behavior Can not build the image, was working and suddenly was not.

Expected behavior Be able to build the image.

To Reproduce File system:

issue
├── context
│   ├── builder.ash
│   └── Dockerfile
└── index.bash

1 directory, 3 files

• Create an issue directory
• Create the following index.bash file under the issue directory:

#!/bin/bash

hereDir=`dirname $0 | while read a; do cd $a && pwd && break; done `

pids=""
rc=0

trap 'sigintTrap' 2

sigintTrap() {
	if [ "${pids}X" != "X" ]; then
		kill -9 ${pids}
	fi
	exit 2
}

minikube delete
minikube start

minikube mount ${hereDir}:/issue &
pids="${pids} $!"

minikube dashboard &
pids="${pids} $!"

cat <<EOF | kubectl apply --force -f -
apiVersion: batch/v1
kind: Job
metadata:
  name: kaniko-job
spec:
  activeDeadlineSeconds: 1000
  template:
    metadata:
      name: kaniko-job
    spec:
      containers:
      - args:
        - -c
        - |
          /busybox/sh <<'EOF'

          /kaniko/executor \
            --context "/issue/context" \
            --no-push \
            --dockerfile "/issue/context/Dockerfile" \
            --insecure

          EOF
        command: [ "/busybox/sh" ]
        name: kaniko-job
        image: gcr.io/kaniko-project/executor:debug
        volumeMounts:
        - name: issue
          mountPath: /issue
      restartPolicy: OnFailure
      volumes:
      - name: issue
        hostPath:
          path: /issue
EOF

for pid in ${pids}; do
	wait ${pid} || let "rc=1"
done

if [ "${rc}" == "1" ]; then
	exit 1
fi

• Create a context directory in the issue directory
• Create the following Dockerfile file under the context directory:

FROM alpine:latest

COPY ./builder.ash /builder.ash

RUN chmod +x /builder.ash && /builder.ash ; rm -rf /builder.ash

• Create the following builder.ash file under the context directory:

#!/bin/ash

echo "Building..."

• Give execution permission to the index.bash script: chmod +x issue/index.bash
• Run the index.bash script: ./issue/index.bash
• I get the following in the pod:

INFO[0000] Resolved base name alpine:latest to alpine:latest 
INFO[0000] Resolved base name alpine:latest to alpine:latest 
INFO[0000] Retrieving image manifest alpine:latest      
INFO[0001] Retrieving image manifest alpine:latest      
INFO[0002] Built cross stage deps: map[]                
INFO[0002] Retrieving image manifest alpine:latest      
INFO[0003] Retrieving image manifest alpine:latest      
INFO[0004] Unpacking rootfs as cmd COPY ./builder.ash /builder.ash requires it. 
error building image: error building stage: failed to get filesystem from image: error removing var/run to make way for new symlink: unlinkat /var/run/secrets/kubernetes.io/serviceaccount/..2020_01_25_19_26_04.767922246: read-only file system

Additional Information

> docker version && minikube version && kubectl version && uname -a

Client: Docker Engine - Community
Version:           19.03.5
API version:       1.40
Go version:        go1.12.12
Git commit:        633a0ea838
Built:             Wed Nov 13 07:29:52 2019
OS/Arch:           linux/amd64
Experimental:      false

Server: Docker Engine - Community
Engine:
 Version:          19.03.5
 API version:      1.40 (minimum version 1.12)
 Go version:       go1.12.12
 Git commit:       633a0ea838
 Built:            Wed Nov 13 07:28:22 2019
 OS/Arch:          linux/amd64
 Experimental:     false
containerd:
 Version:          1.2.10
 GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
runc:
 Version:          1.0.0-rc8+dev
 GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
docker-init:
 Version:          0.18.0
 GitCommit:        fec3683
minikube version: v1.6.2
commit: 54f28ac5d3a815d1196cd5d57d707439ee4bb392
Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.2", GitCommit:"59603c6e503c87169aea6106f57b9f242f64df89", GitTreeState:"clean", BuildDate:"2020-01-18T23:30:10Z", GoVersion:"go1.13.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.0", GitCommit:"70132b0f130acc0bed193d9ba59dd186f0e634cf", GitTreeState:"clean", BuildDate:"2019-12-07T21:12:17Z", GoVersion:"go1.13.4", Compiler:"gc", Platform:"linux/amd64"}
Linux mewtwo-ubuntu 5.3.0-26-generic #28~18.04.1-Ubuntu SMP Wed Dec 18 16:40:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux