new file: common/configuration.nix

new file:   common/hardware-configuration.nix
	new file:   common/home.nix
	new file:   flake.nix
	new file:   hosts/docker/configuration.nix
	new file:   hosts/nixos/configuration.nix
	new file:   hosts/nixos/home.nix
	new file:   hosts/server/configuration.nix
	new file:   install.sh
	new file:   prepare.sh

hosts/docker/configuration.nix

@@ -0,0 +1,124 @@
+# Edit this configuration file to define what should be installed on
+# your system. Help is available in the configuration.nix(5) man page, on
+# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
+
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  pythonEnv = pkgs.python3.withPackages (ps: with ps; [
+    docker
+    pytz
+  ]);
+in
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ../../common/configuration.nix
+    ];
+
+  networking.hostName = "docker"; # Define your hostname.
+  virtualisation.docker.enable = true;
+
+  # Enable docker-compose
+  environment.systemPackages = with pkgs; [
+  docker-compose
+  ];
+
+  # Mount docker persistent data
+  fileSystems."/mnt/docker-persistent-data" = {
+    device = "/dev/disk/by-label/docker-data";
+    fsType = "ext4";
+    options = [ "defaults" "nofail" "noatime" ];
+  };
+
+# Create nextcloud cron scheduled task
+systemd.services.nextcloud = {
+  description = "Nextcloud scheduled task";
+  script = ''docker-compose -f ~/docker/nextcloud/docker-compose.yml exec -u 33 webapp php ./cron.php'';
+  serviceConfig = {
+    Type = "oneshot";
+    User = "nixos";
+  };
+  path = with pkgs; [ docker docker-compose ];
+};
+
+systemd.timers.nextcloud = {
+  wantedBy = [ "timers.target" ];
+  timerConfig = {
+    OnCalendar = "*:0/5";
+    Persistent = true;
+  };
+};
+
+# create update task
+
+  systemd.services.update-containers = {
+    description = "Update Docker Compose Containers";
+    after = [ "docker.service" ];
+    wantedBy = [ "multi-user.target" ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      User = "nixos";
+      WorkingDirectory = "/home/nixos/docker";
+      ExecStart = "${pythonEnv}/bin/python3 /home/nixos/docker/update-containers.py";
+      StandardOutput = "journal";
+      StandardError = "journal";
+    };
+
+    path = [ pkgs.docker pkgs.docker-compose ]; # Ensures docker CLI is available in $PATH
+  };
+
+
+systemd.timers.update-containers = {
+  description = "Weekly + Reboot container update";
+  wantedBy = [ "timers.target" ];
+  timerConfig = {
+    OnBootSec = "5min";           # Run 5 minutes after boot
+    OnUnitActiveSec = "1w";       # Run every week after last run
+    Persistent = true;            # Catch up if system was off
+  };
+};
+
+#Add sym links to data on users home folder
+system.userActivationScripts.createDockerSymlink.text = ''
+  ln -sf /mnt/docker-persistent-data/docker /home/nixos/docker
+'';
+system.userActivationScripts.createSetupSymlink.text = ''
+  ln -sf /mnt/docker-persistent-data/setup /home/nixos/setup
+'';
+
+  users.users.nixos.extraGroups = [ "docker" ];
+  services.openssh.settings.PermitRootLogin = "yes";
+
+  # Open ports in the firewall.
+  networking.firewall.allowedTCPPorts = [ 80 8080 443 ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # Copy the NixOS configuration file and link it from the resulting system
+  # (/run/current-system/configuration.nix). This is useful in case you
+  # accidentally delete configuration.nix.
+  # system.copySystemConfiguration = true;
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  #
+  # Most users should NEVER change this value after the initial install, for any reason,
+  # even if you've upgraded your system to a new NixOS release.
+  #
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  #
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  #
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  #
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.sta>
+  system.stateVersion = "25.05"; # Did you read the comment?
+}