nixpkgs/nixos/tests/docker-tools-overlay.nix

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# this test creates a simple GNU image with docker tools and sees if it executes
import ./make-test.nix ({ pkgs, ... }:
{
name = "docker-tools-overlay";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ lnl7 ];
};
nodes = {
docker =
{ ... }:
{
virtualisation.docker.enable = true;
virtualisation.docker.storageDriver = "overlay"; # defaults to overlay2
};
};
testScript =
''
$docker->waitForUnit("sockets.target");
$docker->succeed("docker load --input='${pkgs.dockerTools.examples.bash}'");
$docker->succeed("docker run --rm ${pkgs.dockerTools.examples.bash.imageName} bash --version");
# Check if the nix store has correct user permissions depending on what
# storage driver is used, incorrectly built images can show up as readonly.
# drw------- 3 0 0 3 Apr 14 11:36 /nix
# drw------- 99 0 0 100 Apr 14 11:36 /nix/store
$docker->succeed("docker run --rm -u 1000:1000 ${pkgs.dockerTools.examples.bash.imageName} bash --version");
'';
})