use service:gluetune as network parameter

hosts/sin/transmission.nix

@@ -1,4 +1,5 @@
-{config, ...}: {
+{ config, ... }:
+{
 
   users.users."starr" = {
     extraGroups = [ "transmission" ];
@@ -14,9 +15,11 @@
     transmission.gid = 989;
   };
 
-  virtualisation.oci-containers = let
+  virtualisation.oci-containers =
+    let
       peerport = "63369";
-  in {
+    in
+    {
       backend = "docker";
       containers = {
         gluetun = {
@@ -56,7 +59,7 @@
             "gluetun"
           ];
           extraOptions = [
-          "--network=container:gluetun"
+            "--network=service:gluetun"
           ];
           environment = {
             PUID = toString config.users.users.transmission.uid;