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.
--label causes cache invalidation in later stages #3088
Description
Actual behavior
A change in a --label value, causes cache invalidation for stages after the first one.
Expected behavior
Caches are used as expected for a RUN command all stages, if there has been no changes to it.
To Reproduce
Steps to reproduce the behavior:
- build the following Dockerfile with kaniko - set the following flags:
--cache --target stage-2 --label somelabel=1
FROM ubuntu:22.04 AS base
RUN groupadd -g 1001 testie1
FROM base as stage-2
RUN groupadd -g 1002 testie2`docker run -v "/tmp/config.json:/kaniko/.docker/config.json" -v $PWD:/workspace2 gcr.io/kaniko-project/executor:debug --dockerfile /workspace2/docker/ubuntu-base-images/Dockerfile --no-push --context /workspace2/ --cache --cache-repo gitlab.catalyst.net.nz:4567/eugene/docker-images/kaniko-testing-cache --target stage-2 --label somelabel=6
2. run step 1 again and observe the cache being used for both stages:
INFO[0000] Resolved base name ubuntu:22.04 to base
INFO[0000] Resolved base name base to stage-2
INFO[0000] Using dockerignore file: /workspace2/.dockerignore
INFO[0000] Retrieving image manifest ubuntu:22.04
INFO[0000] Retrieving image ubuntu:22.04 from registry index.docker.io
INFO[0002] Retrieving image manifest ubuntu:22.04
INFO[0002] Returning cached image manifest
INFO[0003] Built cross stage deps: map[]
INFO[0003] Retrieving image manifest ubuntu:22.04
INFO[0003] Returning cached image manifest
INFO[0003] Retrieving image manifest ubuntu:22.04
INFO[0003] Returning cached image manifest
INFO[0003] Executing 0 build triggers
INFO[0003] Building stage 'ubuntu:22.04' [idx: '0', base-idx: '-1']
INFO[0003] Checking for cached layer my.repo/kaniko-testing-cache:199088e7ceaea1f32dadea11e45b9a467f17625e3de9965e897b4056fd45a47f...
INFO[0003] Using caching version of cmd: RUN groupadd -g 1001 testie1
INFO[0003] Skipping unpacking as no commands require it.
INFO[0003] RUN groupadd -g 1001 testie1
INFO[0003] Found cached layer, extracting to filesystem
INFO[0003] Storing source image from stage 0 at path /kaniko/stages/0
INFO[0008] Deleting filesystem...
INFO[0008] Base image from previous stage 0 found, using saved tar at path /kaniko/stages/0
INFO[0008] Executing 0 build triggers
INFO[0008] Building stage 'base' [idx: '1', base-idx: '0']
INFO[0008] Checking for cached layer my.repo/kaniko-testing-cache:6e4d66b4f2793661198d4c386523cb3898018f5d68c1401938cd6834fcc26e1a...
INFO[0008] Using caching version of cmd: RUN groupadd -g 1002 testie2
INFO[0008] Skipping unpacking as no commands require it.
INFO[0008] RUN groupadd -g 1002 testie2
INFO[0008] Found cached layer, extracting to filesystem
INFO[0008] Skipping push to container registry due to --no-push flag - change to
--label somelabel=2, then run the build again. You'll note the cache not being used for theRUNin the second stage:
INFO[0000] Resolved base name ubuntu:22.04 to base
INFO[0000] Resolved base name base to stage-2
INFO[0000] Using dockerignore file: /workspace2/.dockerignore
INFO[0000] Retrieving image manifest ubuntu:22.04
INFO[0000] Retrieving image ubuntu:22.04 from registry index.docker.io
INFO[0003] Retrieving image manifest ubuntu:22.04
INFO[0003] Returning cached image manifest
INFO[0003] Built cross stage deps: map[]
INFO[0003] Retrieving image manifest ubuntu:22.04
INFO[0003] Returning cached image manifest
INFO[0003] Retrieving image manifest ubuntu:22.04
INFO[0003] Returning cached image manifest
INFO[0003] Executing 0 build triggers
INFO[0003] Building stage 'ubuntu:22.04' [idx: '0', base-idx: '-1']
INFO[0003] Checking for cached layer my.repo/kaniko-testing-cache:199088e7ceaea1f32dadea11e45b9a467f17625e3de9965e897b4056fd45a47f...
INFO[0003] Using caching version of cmd: RUN groupadd -g 1001 testie1
INFO[0003] Skipping unpacking as no commands require it.
INFO[0003] RUN groupadd -g 1001 testie1
INFO[0003] Found cached layer, extracting to filesystem
INFO[0004] Storing source image from stage 0 at path /kaniko/stages/0
INFO[0008] Deleting filesystem...
INFO[0008] Base image from previous stage 0 found, using saved tar at path /kaniko/stages/0
INFO[0008] Executing 0 build triggers
INFO[0008] Building stage 'base' [idx: '1', base-idx: '0']
INFO[0008] Checking for cached layer my.repo/kaniko-testing-cache:836b6a69360e27ebbcb45ba48cb7ebde66dce9f0b5e6ece466526f790a263d53...
INFO[0009] No cached layer found for cmd RUN groupadd -g 1002 testie2
INFO[0009] Unpacking rootfs as cmd RUN groupadd -g 1002 testie2 requires it.
INFO[0009] RUN groupadd -g 1002 testie2
INFO[0009] Initializing snapshotter ...
INFO[0009] Taking snapshot of full filesystem...
INFO[0011] Cmd: /bin/sh
INFO[0011] Args: [-c groupadd -g 1002 testie2]
INFO[0011] Running: [/bin/sh -c groupadd -g 1002 testie2]
INFO[0011] Taking snapshot of full filesystem...
INFO[0011] Pushing layer my.repo/kaniko-testing-cache:836b6a69360e27ebbcb45ba48cb7ebde66dce9f0b5e6ece466526f790a263d53 to cache now
INFO[0011] Pushing image to my.repo/kaniko-testing-cache:836b6a69360e27ebbcb45ba48cb7ebde66dce9f0b5e6ece466526f790a263d53
INFO[0012] Pushed my.repo/kaniko-testing-cache@sha256:d59ec9143f95ad41f88680ff94a5bdad2e8f13bd1b813090cd12430f97830d88
INFO[0012] Skipping push to container registry due to --no-push flag 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 |
|