This repository was archived by the owner on Jun 3, 2025. It is now read-only.
This repository was archived by the owner on Jun 3, 2025. It is now read-only.
Kaniko fails to unpack an image if symlink to a directory was replaced with a new dir and its old target removed #3442
Description
Actual behavior
A clear and concise description of what the bug is.
I get an error
INFO[0000] Building stage 'localhost:5000/intermediate:4' [idx: '0', base-idx: '-1']
INFO[0000] Unpacking rootfs as cmd RUN touch grass requires it.
error building image: error building stage: failed to get filesystem from image: mkdir /things: file exists
Maybe it's the same as #3428
Expected behavior
A clear and concise description of what you expected to happen.
Dir should be created successfully
To Reproduce
Steps to reproduce the behavior:
- Create a dir with the following structure
$ tree
.
├── base
│ └── Dockerfile
├── boom
│ └── Dockerfile
├── build.sh
└── intermediate
└── Dockerfile
3 directories, 4 files
$ cat build.sh
#!/usr/bin/env bash
set -e
# docker run -d -p 5000:5000 --name registry registry:2
dirs=(base intermediate boom)
version=$(getfattr -n user.build_ver --only-values $0 2>/dev/null || echo '0')
version=$((version + 1))
setfattr -n user.build_ver -v $version $0
echo "build version: $version"
for dir in ${dirs[@]}; do
cd $dir
docker run --network=host --rm -v $PWD:/workspace gcr.io/kaniko-project/executor@sha256:9e69fd4330ec887829c780f5126dd80edc663df6def362cd22e79bcdf00ac53f --context . --cache-run-layers=false --dockerfile "/workspace/Dockerfile" "--destination=localhost:5000/$dir:$version" --build-arg "VERSION=$version"
cd ..
done
$ cat base/Dockerfile
# Just because I have it locally
FROM buildpack-deps:bookworm
RUN mkdir stuff && echo "42" > stuff/answer.h && ln -s stuff things
$ cat intermediate/Dockerfile
ARG VERSION
FROM localhost:5000/base:${VERSION}
RUN rm things && rm -r stuff && mkdir things && echo "34" > things/answer.c
vladimir@np940x5n:~/profit/kanibug$ cat boom/Dockerfile
ARG VERSION
FROM localhost:5000/intermediate:${VERSION}
RUN touch grass
Note:
this also fails
ARG VERSION
FROM localhost:5000/base:${VERSION}
RUN rm things && mkdir things
RUN rm -r stuff && echo "34" > things/answer.c
but remove in different steps
ARG VERSION
FROM localhost:5000/base:${VERSION}
RUN rm things
RUN mkdir things
RUN rm -r stuff && echo "34" > things/answer.c
or
ARG VERSION
FROM localhost:5000/base:${VERSION}
RUN rm things && rm -r stuff
RUN mkdir things && echo "34" > things/answer.c
works, also it works if target dir is kept
ARG VERSION
FROM localhost:5000/base:${VERSION}
RUN rm things && mkdir things && echo "34" > things/answer.c
- run
./build.sh
Additional Information
- Dockerfile
Please provide either the Dockerfile you're trying to build or one that can reproduce this error.
Multiple files above - Build Context
Please provide or clearly describe any files needed to build the Dockerfile (ADD/COPY commands)
No ADD/COPY commands used - Kaniko Image (fully qualified with digest)
gcr.io/kaniko-project/executor@sha256:9e69fd4330ec887829c780f5126dd80edc663df6def362cd22e79bcdf00ac53f
Triage Notes for the Maintainers
| Description | Yes/No |
|---|---|
| Please check if this a new feature you are proposing | |
| Please check if the build works in docker but not in kaniko | |
Please check if this error is seen when you use --cache flag |
|
| Please check if your dockerfile is a multistage dockerfile |