nixos-configs/modules/docker/default.nix

self: {
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib) mkIf mkOption types;

  cfg = config.roles.docker;
in {
  imports = [self.inputs.docker-compose.nixosModules.default];

  options.roles.docker = {
    enable = mkOption {
      default = cfg.compositions != {};
      type = types.bool;
      description = ''
        Option to enable docker even without compositions.
      '';
    };

    storageDriver = mkOption {
      default = "btrfs"; # I use BTRFS on all my servers
      type = types.str;
    };
  };

  config = mkIf cfg.enable {
    virtualisation = {
      docker = {
        enable = true;
        storageDriver = cfg.storageDriver;

        daemon.settings.dns = ["8.8.8.8" "1.1.1.1"];
      };
    };

    # Script for updating the images of a compose.nix file
    environment.systemPackages = [
      (pkgs.callPackage ./updateImage.nix {})
    ];
  };

  # For accurate stack trace
  _file = ./default.nix;
}