Reland "CTR: add xxd to env"

This is a reland of commit 91ff95f48ce2468bd9bc7ecf2b519fedd6c4a558

Original change's description:
> CTR: add xxd to env
>
> BUG=b:256558862
> TEST=./build-dockerimages.py and docker run <image> xxd
>
> Change-Id: If4a2d61914c558fde57cfed55c7091c9f5ef60a5
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3997875
> Tested-by: Derek Beckett <dbeckett@chromium.org>
> Reviewed-by: Jaques Clapauch <jaquesc@google.com>
> Auto-Submit: Derek Beckett <dbeckett@chromium.org>
> Commit-Queue: Jaques Clapauch <jaquesc@google.com>

Bug: b:256558862
Change-Id: I86d7af0bcb149b77342b7d212d2bbea44d04562f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3998133
Tested-by: Derek Beckett <dbeckett@chromium.org>
Reviewed-by: Jaques Clapauch <jaquesc@google.com>
Commit-Queue: Derek Beckett <dbeckett@chromium.org>
1 file changed