diff --git a/extra/docker.nix b/extra/docker.nix
index 295d22e..4a90663 100644
--- a/extra/docker.nix
+++ b/extra/docker.nix
@@ -1,8 +1,13 @@
 { config, pkgs, ... }:
 
 {
-  virtualisation.docker.enable = true;
   environment.systemPackages = with pkgs; [
+    docker
     docker_compose
   ];
+
+  virtualisation.docker = {
+    enable = true;
+    autoPrune.enable = true;
+  };
 }