diff --git a/flake.nix b/flake.nix
index 9a277e9..f555345 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,6 +24,7 @@
       dockerModule = import ./modules/docker;
       subvolumesModule = import ./modules/subvolumes;
       k3sModule = import ./modules/k3s;
+      networkModule = import ./modules/network;
 
       makeConfig = { hostname, extraModules ? [ ] }:
         with image-builder.packages.aarch64-linux.modules;
@@ -39,7 +40,7 @@
           ] ++ extraModules;
         };
 
-      makeGenericK3sConfig = { hostname, macAddress ? null, enableK3s ? true, selfIp, serverIp ? null, extraModules ? [ ] }:
+      makeGenericK3sConfig = { hostname, enableK3s ? true, serverIp ? null, extraModules ? [ ] }:
         with image-builder.packages.aarch64-linux.modules;
         makeConfig {
           inherit hostname;
@@ -58,20 +59,6 @@
                 services.lvm.enable = true;
                 services.rpcbind.enable = true;
 
-                networking = {
-                  interfaces.end0 = {
-                    inherit macAddress;
-                    ipv4.addresses = [
-                      {
-                        address = selfIp;
-                        prefixLength = 24;
-                      }
-                    ];
-                  };
-                  defaultGateway = "192.168.20.1";
-                  nameservers = [ "192.168.20.21" "192.168.20.1" ];
-                };
-
                 environment.systemPackages = with pkgs; [
                   nfs-utils
                 ];
@@ -81,9 +68,12 @@
 
       makeBoardK3sConfig = module: { hostname, macAddress ? null, enableK3s ? true, selfIp, serverIp }:
         makeGenericK3sConfig {
-          inherit hostname macAddress enableK3s selfIp serverIp;
+          inherit hostname enableK3s serverIp;
 
-          extraModules = [ module ];
+          extraModules = [
+            (networkModule { inherit macAddress selfIp; })
+            module
+          ];
         };
 
       makeRock64K3sConfig = makeBoardK3sConfig image-builder.packages.aarch64-linux.modules.rock64;
@@ -105,12 +95,15 @@
           ];
         in
         makeGenericK3sConfig {
-          inherit hostname selfIp serverIp;
+          inherit hostname serverIp;
 
           enableK3s = unlockMounts && mountVolumes && enableK3s;
 
           extraModules = [
             soquartz-blade
+            (networkModule {
+              inherit selfIp;
+            })
             (btrbkModule {
               instances = [
                 {
@@ -274,6 +267,40 @@
           ];
         };
 
+      makeBuildConfig = { hostname, macAddress ? null, selfIp }:
+        with image-builder.packages.aarch64-linux.modules;
+        let
+          device = "/btrfs.4G";
+          mountDir = "/btrfs/loop";
+          subvolumes = [
+            "@build-cfg"
+          ];
+        in
+        makeConfig {
+          inherit hostname;
+
+          extraModules = [
+            rockPro64v2
+            dockerModule
+            (networkModule { inherit macAddress selfIp; })
+            (btrbkModule {
+              instances = [
+                { inherit mountDir subvolumes; }
+              ];
+            })
+            (subvolumesModule {
+              inherit device subvolumes;
+            })
+            {
+              fileSystems."${mountDir}" = {
+                inherit device;
+                fsType = "btrfs";
+                options = [ "defaults" "compress=zstd" "rw" "loop" ];
+              };
+            }
+          ];
+        };
+
       makeNextcloudConfig = { hostname, primaryIp ? null }:
         with image-builder.packages.aarch64-linux.modules;
         let
@@ -348,6 +375,7 @@
           extraModules = [
             rock64
             dockerModule
+            (networkModule { inherit macAddress selfIp; })
             (btrbkModule {
               instances = [{
                 inherit mountDir primaryIp subvolumes;
@@ -380,21 +408,6 @@
                   options = [ "defaults" "compress=zstd" "rw" ];
                 };
               })
-            {
-              networking = {
-                interfaces.end0 = {
-                  inherit macAddress;
-                  ipv4.addresses = [
-                    {
-                      address = selfIp;
-                      prefixLength = 24;
-                    }
-                  ];
-                };
-                defaultGateway = "192.168.20.1";
-                nameservers = [ "192.168.20.21" "192.168.20.1" ];
-              };
-            }
           ];
         };
 
@@ -457,6 +470,11 @@
           primaryIp = "192.168.20.11";
         };
 
+        build2 = makeBuildConfig {
+          hostname = "build2";
+          selfIp = "192.168.20.101";
+        };
+
         k3s1 = makeSoQuartzK3sConfig {
           hostname = "k3s1";
           selfIp = "192.168.20.120";
@@ -555,6 +573,11 @@
         configuration = self.nixosConfigurations.nextcloud2;
       };
 
+      deploy.nodes.build2 = deployer {
+        hostname = "192.168.20.101";
+        configuration = self.nixosConfigurations.build2;
+      };
+
       deploy.nodes.k3s1 = deployer {
         hostname = "192.168.20.120";
         configuration = self.nixosConfigurations.k3s1;
diff --git a/modules/network/default.nix b/modules/network/default.nix
new file mode 100644
index 0000000..4fe5bd2
--- /dev/null
+++ b/modules/network/default.nix
@@ -0,0 +1,17 @@
+{ macAddress ? null, selfIp }:
+
+{
+  networking = {
+    interfaces.end0 = {
+      inherit macAddress;
+      ipv4.addresses = [
+        {
+          address = selfIp;
+          prefixLength = 24;
+        }
+      ];
+    };
+    defaultGateway = "192.168.20.1";
+    nameservers = [ "192.168.20.21" "192.168.20.1" ];
+  };
+}