Dockerignore files do not support wildcards in exception patterns

[stefanloerwald]

File: engine/reference/builder.md

The section about dockerignore files incorrectly states that wildcards in exception patterns work. https://docs.docker.com/engine/reference/builder/#dockerignore-file

They don't. The corresponding issue is open since 2017: moby/moby#30018

Of course ideally this would be supported, but until then, I think it's only fair to update the docs to reflect the current state.

[MatthiasKunnen]

It would be a good idea to document that dockerignore has several shortcomings and link to moby/moby#30018. Hopefully it will prevent people from wasting their time with this behavior as I just did.

[docker-robott]

There hasn't been any activity on this issue for a long time.
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[stefanloerwald]

/remove-lifecycle stale