built image lost 'RUN mkdir -p /tmp' layer.

[zhuoshaojian]

Actual behavior A clear and concise description of what the bug is. Dockerfile:

FROM gcr.io/kaniko-project/executor:v1.17.0-debug

RUN mkdir -p /tmp

The /tmp directory is missing in the built image which is created by 'RUN mkdir -p /tmp'.

Expected behavior A clear and concise description of what you expected to happen. keep "/tmp" directory and 'RUN mkdir -p /tmp' layer. To Reproduce Steps to reproduce the behavior:

1. build image

/kaniko/executor \
    --context=. \
    --dockerfile=Dockerfile \
    --insecure-pull
    --destination=${destination_image}

2. run container

docker run -it --rm --entrypoint /busybox/ls ${destination_image} -l /

Additional Information

• Dockerfile FROM gcr.io/kaniko-project/executor:v1.17.0-debug

RUN mkdir -p /tmp

• Build Context Please provide or clearly describe any files needed to build the Dockerfile (ADD/COPY commands)
• Kaniko Image (fully qualified with digest)

Triage Notes for the Maintainers

Description	Yes/No
Please check if this a new feature you are proposing	- [ No ]
Please check if the build works in docker but not in kaniko	- [ Yes ]
Please check if this error is seen when you use --cache flag	- [ No]
Please check if your dockerfile is a multistage dockerfile	- [ No ]

[JeromeJu]

Thanks for the issue @zhuoshaojian . Would you mind inputs more what are the usage for the mkdir and if it would be used in a multi-stage build? This might be a possible dupe of https://github.com/GoogleContainerTools/kaniko/issues/2764.

[yunwuxin]

When I try to create an empty directory, I encounter the same issue.

[JeromeJu]

When I try to create an empty directory, I encounter the same issue.

Would you mind help provide the inputs/ dockerfile ?

[kt315]

@yunwuxin you tried make dir in /var/run this dir will be ignored.
just run build with arg -v debug and you will see message Not adding /var/run because it is ignored and another ignored dirs

[kt315]

@zhuoshaojian, I can't reproduce the problem.

$ cat Dockerfile
FROM gcr.io/kaniko-project/executor:v1.17.0-debug
RUN mkdir -p /tmp

$ podman run --rm -it --net host --name kaniko_test -v "$(pwd):/workspace/" gcr.io/kaniko-project/executor:v1.17.0-debug --insecure --insecure-pull --destination 127.0.0.1:5000/test:tmp
INFO[0000] Retrieving image manifest gcr.io/kaniko-project/executor:v1.17.0-debug
INFO[0000] Retrieving image gcr.io/kaniko-project/executor:v1.17.0-debug from registry gcr.io
INFO[0001] Built cross stage deps: map[]
INFO[0001] Retrieving image manifest gcr.io/kaniko-project/executor:v1.17.0-debug
INFO[0001] Returning cached image manifest
INFO[0001] Executing 0 build triggers
INFO[0001] Building stage 'gcr.io/kaniko-project/executor:v1.17.0-debug' [idx: '0', base-idx: '-1']
INFO[0001] Unpacking rootfs as cmd RUN mkdir -p /tmp requires it.
INFO[0008] RUN mkdir -p /tmp
INFO[0008] Initializing snapshotter ...
INFO[0008] Taking snapshot of full filesystem...
INFO[0008] Cmd: /bin/sh
INFO[0008] Args: [-c mkdir -p /tmp]
INFO[0008] Running: [/bin/sh -c mkdir -p /tmp]
INFO[0008] Taking snapshot of full filesystem...
INFO[0008] Pushing image to 127.0.0.1:5000/test:tmp
INFO[0008] Pushed 127.0.0.1:5000/test@sha256:e166240eddb1d684aa6297538d42452e296a4ff3d0bb3e74fe31f8a88864b1b6

$ podman run -it --rm --entrypoint /busybox/ls localhost:5000/test:tmp /
bin        busybox    dev        etc        kaniko     proc       run        sys        tmp        workspace

$ podman run --rm -it --net host --name kaniko_test -v "$(pwd):/workspace/" gcr.io/kaniko-project/executor:latest --insecure --insecure-pull --destination 127.0.0.1:5000/test:tmp2
INFO[0000] Retrieving image manifest gcr.io/kaniko-project/executor:v1.17.0-debug
INFO[0000] Retrieving image gcr.io/kaniko-project/executor:v1.17.0-debug from registry gcr.io
INFO[0001] Built cross stage deps: map[]
INFO[0001] Retrieving image manifest gcr.io/kaniko-project/executor:v1.17.0-debug
INFO[0001] Returning cached image manifest
INFO[0001] Executing 0 build triggers
INFO[0001] Building stage 'gcr.io/kaniko-project/executor:v1.17.0-debug' [idx: '0', base-idx: '-1']
INFO[0001] Unpacking rootfs as cmd RUN mkdir -p /tmp requires it.
INFO[0007] RUN mkdir -p /tmp
INFO[0007] Initializing snapshotter ...
INFO[0007] Taking snapshot of full filesystem...
INFO[0007] Cmd: /bin/sh
INFO[0007] Args: [-c mkdir -p /tmp]
INFO[0007] Running: [/bin/sh -c mkdir -p /tmp]
INFO[0007] Taking snapshot of full filesystem...
INFO[0008] Pushing image to 127.0.0.1:5000/test:tmp2
INFO[0008] Pushed 127.0.0.1:5000/test@sha256:2b529a32a066cc48509d231f9c1b47033c90e24e33fd4ea6f09352177011ed4f

$ podman run -it --rm --entrypoint /busybox/ls localhost:5000/test:tmp2 /
bin        busybox    dev        etc        kaniko     proc       run        sys        tmp        workspace

Can you copy all your steps (cat dockerfile, run docker container, another commands) from console here or pastebin.