copy doesn't work (for folders)

[haf]

E.g. this fails yarn docker build --copy client/corp.js @corp/api with YN0001: │ Error: Invalid filename: "client/corp.js"

I want to copy a folder into the dockerfile. Any escape hatch around??

[haf]

yarn-plugins/packages/docker-build/src/utils/copyAdditional.ts

Line 5 in 67a2686

const path = toFilename(inputPath);

seems to be bugged. the author mixes up filenames with file paths.

[haf]

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