oci-image-tool: init at 1.0.0-rc1

pkgs/tools/misc/oci-image-tool/default.nix

@@ -0,0 +1,23 @@
+{ lib, fetchFromGitHub, buildGoPackage }:
+
+buildGoPackage rec {
+  name = "oci-image-tool-${version}";
+  version = "1.0.0-rc1";
+
+  goPackagePath = "github.com/opencontainers/image-tools";
+  subPackages = [ "cmd/oci-image-tool" ];
+
+  src = fetchFromGitHub {
+    owner = "opencontainers";
+    repo = "image-tools";
+    rev = "v${version}";
+    sha256 = "0c4n69smqlkf0r6khy9gbg5f810qh9g8jqsl9kibb0dyswizr14r";
+  };
+
+  meta = {
+    description = "A collection of tools for working with the OCI image format specification";
+    homepage = https://github.com/opencontainers/image-tools;
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ nzhang-zh ];
+  };
+}