build container images

flake.nix

@@ -88,6 +88,27 @@
             installer-iso = iso-config.config.system.build.isoImage;
             installer-vm = iso-config.config.system.build.vm;
           }
+        )
+        // (
+          # Container tarballs for LXC deployment to Proxmox
+          # Only generates tarballs for hosts that import proxmox-lxc.nix
+          let
+            lxcHosts = builtins.filter (
+              name:
+              let
+                hostPath = ./hosts/${name}/default.nix;
+                content = builtins.readFile hostPath;
+              in
+              builtins.match ".*proxmox-lxc.nix.*" content != null
+            ) (builtins.attrNames (builtins.readDir ./hosts));
+          in
+          builtins.foldl' (
+            result: name:
+            result
+            // {
+              "containers-${name}" = nixosConfigurations.${name}.config.system.build.tarball;
+            }
+          ) { } lxcHosts
         );
 
       nixosConfigurations = builtins.foldl' (