host/asus: persist docker

hosts/asus-gl553vd/configs/imp.nix

@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ config, lib, ... }:
 
 {
   # A setup which would clean root subvolume between boots remove automatically removed roots that
@@ -36,7 +36,8 @@
     "ssh_host_ed25519_key"
   ];
 
-  environment.persistence."/persistent/system" = {
+  environment.persistence = {
+    "/persistent/system" = {
       hideMounts = true;
       directories = [
         "/var/lib/bluetooth"
@@ -52,4 +53,16 @@
         "/etc/ssh/ssh_host_ed25519_key.pub"
       ];
     };
+    "/persistent/docker" = lib.mkIf config.virtualisation.docker.enable {
+      hideMounts = true;
+      directories = map (v: "/var/lib/docker/${v}") [
+        "containers"
+        "volumes"
+        "image"
+        "overlay2"
+        "network"
+      ];
+      files = [ "/var/lib/docker/engine-id" ];
+    };
+  };
 }