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fix(nix): Add empty image config to allow k8s usage

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Introduce an empty runtime configuration object in each built layer.

This is required because Kubernetes expects the configuration to be
present (even if it's just empty values).

Providing an empty configuration will make Docker's API return a full
configuration struct with default (i.e. empty) values rather than
`null`, which works for Kubernetes.

This fixes issue #1. See the issue for additional details.
This commit is contained in:
Vincent Ambo 2019-07-30 23:55:28 +01:00 committed by Vincent Ambo
parent 9a737c75bd
commit 8dc407cc74
1 changed files with 2 additions and 0 deletions
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build-registry-image.nix
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@ -133,6 +133,8 @@ let
os = "linux";
rootfs.type = "layers";
rootfs.diff_ids = map (layer: "sha256:${layer.sha256}") allLayers;
# Required to let Kubernetes import Nixery images
config = {};
};
configJson = writeText "${baseName}-config.json" (builtins.toJSON config);
configMetadata = with builtins; fromJSON (readFile (runCommand "config-meta" {