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|
{
stdenv,
lib,
coreutils,
bash,
gnutar,
writeText,
}:
let
stripScheme = builtins.replaceStrings [ "https://" "http://" ] [ "" "" ];
stripNixStore = s: lib.removePrefix "${builtins.storeDir}/" s;
in
{
name,
registry ? "https://registry-1.docker.io/v2/",
repository ? "library",
imageName,
tag,
imageLayers,
imageConfig,
image ? "${stripScheme registry}/${repository}/${imageName}:${tag}",
}:
# Make sure there are *no* slashes in the repository or container
# names since we use these to make the output derivation name for the
# nix-store path.
assert null == lib.findFirst (c: "/" == c) null (lib.stringToCharacters repository);
assert null == lib.findFirst (c: "/" == c) null (lib.stringToCharacters imageName);
let
# Abuse paths to collapse possible double slashes
repoTag0 = toString (/. + "/${stripScheme registry}/${repository}/${imageName}");
repoTag1 = lib.removePrefix "/" repoTag0;
layers = map stripNixStore imageLayers;
manifest = writeText "manifest.json" (
builtins.toJSON [
{
Config = stripNixStore imageConfig;
Layers = layers;
RepoTags = [ "${repoTag1}:${tag}" ];
}
]
);
repositories = writeText "repositories" (
builtins.toJSON {
${repoTag1} = {
${tag} = lib.last layers;
};
}
);
imageFileStorePaths = writeText "imageFileStorePaths.txt" (
lib.concatStringsSep "\n" ((lib.unique imageLayers) ++ [ imageConfig ])
);
in
stdenv.mkDerivation {
builder = ./fetchdocker-builder.sh;
buildInputs = [ coreutils ];
preferLocalBuild = true;
inherit
name
imageName
repository
tag
;
inherit
bash
gnutar
manifest
repositories
;
inherit imageFileStorePaths;
passthru = {
inherit image;
};
}
|
