dockerfile: allow pivot point for --parents flag #4728
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Signed-off-by: Tonis Tiigi <[email protected]>
This replicates similar functionality in rsync. Signed-off-by: Tonis Tiigi <[email protected]>
AkihiroSuda
reviewed
Mar 3, 2024
| As with Rsync, it is possible to limit which parent directories are preserved by | ||
| inserting a dot and a slash (`./`) into the source path. If such point exists, only parent | ||
| directories after it will be preserved. This may be especially useful copies between stages | ||
| with `--from` where the source paths need to be absolute. |
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Dockerfile version should be mentioned
AkihiroSuda
reviewed
Mar 3, 2024
AkihiroSuda
reviewed
Mar 3, 2024
| parent, pattern, ok := strings.Cut(src, "/./") | ||
| if !ok { | ||
| pattern = src | ||
| src = "/" |
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os.PathSeparator should be used ?
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No, it should always be slash. Windows works with slashes as well. If the input is not / ( and windows) then it is converted to / in NormalizePath().
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That was fast. You rock! Thank you! 🙏🏻 |
crazy-max
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Mar 4, 2024
Signed-off-by: Tonis Tiigi <[email protected]>
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AkihiroSuda
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follow-up for #3001
Similarily to
rsync--relativeflag add support for/./pivot point to mark which parent directories as kept.This is especially useful in multi-stage builds because
--frompaths need to be always full paths.cc @DYefimov