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be02841 · Feb 18, 2021

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Feb 18, 2021
Feb 18, 2021
Feb 18, 2021
Feb 18, 2021

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This project recreates the issues with layers disappearing from images when using the cache-from argument.

To recreate run the following steps:

DOCKER_BUILDKIT=1 docker build -t cgreening/cache_problem:1 .  --build-arg BUILDKIT_INLINE_CACHE=1
docker push cgreening/cache_problem:1
docker run -it --entrypoint /bin/bash cgreening/cache_problem:1
root@f3b83bd929e6:/app# ls
Dockerfile  README.md  index.js  node_modules  package.json  yarn.lock

Clean up just like on the build machine:

docker system prune -a

Build again

DOCKER_BUILDKIT=1 docker build -t cgreening/cache_problem:2 .  --build-arg BUILDKIT_INLINE_CACHE=1 --cache-from cgreening/cache_problem:1
docker push cgreening/cache_problem:2
docker run -it --entrypoint /bin/bash cgreening/cache_problem:2
root@f3b83bd929e6:/app# ls
Dockerfile  README.md  index.js  node_modules  package.json  yarn.lock

Clean up again:

docker system prune -a

Build again

DOCKER_BUILDKIT=1 docker build -t cgreening/cache_problem:3 .  --build-arg BUILDKIT_INLINE_CACHE=1 --cache-from cgreening/cache_problem:2
docker push cgreening/cache_problem:3
docker run -it --entrypoint /bin/bash cgreening/cache_problem:3
root@462e81ea94e4:/app# ls
Dockerfile  README.md  index.js  package.json

You will see that there is no node_modules folder. This folder should have been created by the step:

RUN yarn

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