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dockerTools.buildLayeredImage: restore layer sharing

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PR #58431 added /nix/store to each layer.tar. However, the timestamp was
not explicitly set while adding /nix and /nix/store to the archive. This
resulted in different SHA256 hashes of layer.tar between image builds.

This change sets time and owner when tar'ing /nix/store.
This commit is contained in:
Daniël de Kok 2019-06-05 11:10:00 +02:00
parent 8b3d0b00d5
commit d7f3186b48
1 changed files with 3 additions and 1 deletions
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4
pkgs/build-support/docker/store-path-to-layer.sh
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@ -9,7 +9,9 @@ layerPath="./layers/$layerNumber"
echo "Creating layer #$layerNumber for $@"
mkdir -p "$layerPath"
tar --no-recursion -rf "$layerPath/layer.tar" /nix /nix/store
tar --no-recursion -rf "$layerPath/layer.tar" \
--mtime="@$SOURCE_DATE_EPOCH" \
--owner=0 --group=0 /nix /nix/store
tar -rpf "$layerPath/layer.tar" --hard-dereference --sort=name \
--mtime="@$SOURCE_DATE_EPOCH" \
--owner=0 --group=0 "$@"