Find a way to support `RUN touch --date=@TIMESTAMP /MOUNT/POINT`

https://github.com/moby/buildkit/blob/7e14bbd46149ae4c430caab526bc4cff8f7df112/client/client_test.go#L8205-L8206

>  The timestamp specified in `RUN touch` is lost when the executor container exits, so it seems hard to retain custom timestamps.
>
> `SOURCE_DATE_EPOCH` support for mount point dirs (and any arbitrary dirs/files) will be covered in
> - https://github.com/containerd/containerd/pull/7710

_Originally posted by @AkihiroSuda in https://github.com/moby/buildkit/pull/3149#discussion_r1030943877_
      

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Find a way to support `RUN touch --date=@TIMESTAMP /MOUNT/POINT` #3309

AkihiroSuda
openedon Nov 23, 2022

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	// No support for reproducing the timestamps of mount point directories such as var/foo/ and tmp/foo2/bar/,
	// because the touched timestamp value is lost when the mount is unmounted.

Find a way to support RUN touch --date=@TIMESTAMP /MOUNT/POINT #3309

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AkihiroSudaopenedon Nov 23, 2022

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