From 1b1e23024ba24e3df85ede12d6a1f30f871dcb10 Mon Sep 17 00:00:00 2001
From: Alex Biehl <alex.biehl@target.com>
Date: Wed, 27 Mar 2019 12:08:50 +0100
Subject: [PATCH] Strip leading ./ in customization layer

---
 pkgs/build-support/docker/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 6efb447e1424..3ac376e267e5 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -344,7 +344,7 @@ rec {
       # Tar up the layer and throw it into 'layer.tar'.
       echo "Packing layer..."
       mkdir $out
-      tar -C layer --sort=name --mtime="@$SOURCE_DATE_EPOCH" --owner=${toString uid} --group=${toString gid} -cf $out/layer.tar .
+      tar --transform='s|^\./||' -C layer --sort=name --mtime="@$SOURCE_DATE_EPOCH" --owner=${toString uid} --group=${toString gid} -cf $out/layer.tar .
 
       # Compute a checksum of the tarball.
       echo "Computing layer checksum..."