docs: clarify WORKDIR tilde path behavior#6937
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Pull request overview
This PR clarifies Dockerfile WORKDIR behavior in BuildKit’s documentation by explicitly noting that WORKDIR does not do shell-style tilde expansion, preventing users from assuming ~/~username resolve to home directories.
Changes:
- Add a documentation note that
WORKDIRdoes not perform shell expansion. - Clarify that
~and~usernameare treated as literal directory names (not home directories).
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This was referenced Jul 7, 2026
tonistiigi
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Jul 7, 2026
Signed-off-by: Devendra Kushwah <dk3313250@gmail.com>
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Description
Adds a note clarifying that
WORKDIRdoes not perform shell expansion.Paths beginning with
~or~usernameare treated as literal directory names and are not resolved to a user's home directory.Related issues
References docker/docs#25512