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Change the error message 'Cannot locate specified Dockerfile' to be more helpful. #38778

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eashi commented Feb 22, 2019

- What I did
I have been troubleshooting why my docker build command wasn't working, I was getting the error "Cannot locate specified Dockerfile" Add possible reason why this error would happen.

- How I did it
I just changed the error message.

- How to verify it

- Description for the changelog
Change language of error message in detect.go and corresponding test file internals_test.go

- A picture of a cute animal (not mandatory but encouraged)

Change the error message to be more helpful
Add possible reason why the error 'Cannot locate specified Dockerfile' would happen.

Signed-off-by: Emad Alashi <>

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tonistiigi commented Mar 21, 2019

This is weird. You should be able to add Dockerfile to .dockerignore. This works in buildkit for sure, and I think it should work in legacy as well. What's the sample case?


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eashi commented Mar 25, 2019

Apologies, I tried to reproduce my issue and I couldn't, obviously I was doing something wrong. I will close this PR. 😅

@eashi eashi closed this Mar 25, 2019

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