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| author | Antoine Eiche <lewo@abesis.fr> | 2020-01-30 10:43:15 +0100 |
|---|---|---|
| committer | Antoine Eiche <lewo@abesis.fr> | 2020-01-30 21:09:52 +0100 |
| commit | 01a68479cc08d4f937a93c27f8f36e701e4bd435 (patch) | |
| tree | 4433cb43bc87764ae012e3bc3ddc2f207735481b /pkgs/build-support | |
| parent | 283bcc1003c9cdabbbbe8d117b66d8dec6b46af9 (diff) | |
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dockerTools.buildLayeredImage: assert maxLayers > 1
Since a layer is reserved for "customization", the image can not
contains less than 2 layers.
The user gets the following message at evaluation:
nix-instantiate nixos/tests/docker-tools.nix
trace: the maxLayers argument of dockerTools.buildLayeredImage function must be greather than 1 (current value: 1)
Diffstat (limited to 'pkgs/build-support')
| -rw-r--r-- | pkgs/build-support/docker/default.nix | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix index 9f831d48bfa..509b7e2a7e1 100644 --- a/pkgs/build-support/docker/default.nix +++ b/pkgs/build-support/docker/default.nix @@ -545,6 +545,9 @@ rec { # believe the actual maximum is 128. maxLayers ? 100 }: + assert + (lib.assertMsg (maxLayers > 1) + "the maxLayers argument of dockerTools.buildLayeredImage function must be greather than 1 (current value: ${toString maxLayers})"); let baseName = baseNameOf name; contentsEnv = symlinkJoin { |