fix generation generation

hosts/vaniville/configuration.nix

@@ -6,16 +6,20 @@
       ./hardware-configuration.nix
       ../../users/blake/blake.nix
       ../../modules/system/system.nix
+      ../../modules/homelab/ddns_docker.nix
     ];
 
   modules = {
     system = {
       ssh.enable = true;
-      docker.enable = false;
+      docker.enable = true;
       syncthing.enable = false;
       tailscale.enable = true;
       nvidia.enable = false;
     };
+    homelab = {
+      ddns_docker.enable = true;
+    };
   };
 
   # enable user

rebuild.sh

@@ -7,8 +7,7 @@ pushd ~/.nix
 git diff -U0 $(find . -name '*.nix')
 
 # add generation comment to flake.nix
-current_gen=$(nixos-rebuild list-generations | grep current | awk '{print $1}')
-gen=$((current_gen + 1))
+gen=$(nixos-rebuild list-generations | grep current | awk '{print $1}')
 if sed -n '3p' flake.nix | grep -q '^# generation:'; then
     # replace the comment on line 3
     sed -i "3s/^# generation:.*/# generation: $gen/" flake.nix