{ config, lib, pkgs, ... }:
{
  config = {
    environment.systemPackages = [
      pkgs.docker
      pkgs.docker-compose
    ];
    
    # Create docker group
    users.groups.docker = {};
    
    # Simple Docker systemd service
    systemd.services.docker = {
      enable = true;
      description = "Docker Application Container Engine";
      after = [ "network-online.target" ];
      wants = [ "network-online.target" ];
      serviceConfig = {
        Type = "notify";
        ExecStart = "${pkgs.docker}/bin/dockerd";
        ExecReload = "${pkgs.coreutils}/bin/kill -s HUP $MAINPID";
        TimeoutStartSec = 0;
        RestartSec = 2;
        Restart = "always";
        StartLimitBurst = 3;
        StartLimitInterval = 60;
        LimitNOFILE = 1048576;
        LimitNPROC = 1048576;
        LimitCORE = "infinity";
        TasksMax = "infinity";
        Delegate = "yes";
        KillMode = "process";
        OOMScoreAdjust = -500;
      };
      wantedBy = [ "multi-user.target" ];
    };
  };
}