[container-dev] Add container configs like policy.json and regitries.conf

system/features/container-dev.nix

@@ -1,6 +1,13 @@
-{ ... }:
-{
+_: {
   virtualisation = {
+    containers = {
+      enable = true;
+      registries.search = [
+        "docker.io"
+        "docker.havenisms.com"
+      ];
+    };
+
     docker = {
       enable = true;
       # rootless = {
@@ -15,9 +22,7 @@
 
   hardware.nvidia-container-toolkit.enable = true;
 
-  home-manager.users.drew =
-    { ... }:
-    {
+  home-manager.users.drew = _: {
     # Add the path to the docker socket to the environment.
     programs.zsh.envExtra = ''
       export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock