systemd unit to create a network for transmission

hosts/sin/transmission.nix

@@ -15,12 +15,30 @@
     transmission.gid = 989;
   };
 
+  systemd.services = {
+    docker-transmission-network = {
+      after = [
+        "network.target"
+        "docker-gluetun"
+        "docker-transmission"
+      ];
+      wantedBy = [
+        "docker-gluetun"
+        "docker-transmission"
+      ];
+      serviceConfig = {
+        ExecStart = "docker network create docker-transmission";
+      };
+    };
+  };
+
   virtualisation.oci-containers =
     let
       peerport = "63369";
     in
     {
       backend = "docker";
+      networking = { };
       containers = {
         gluetun = {
           image = "qmcgaw/gluetun";
@@ -39,6 +57,7 @@
           extraOptions = [
             "--cap-add=NET_ADMIN"
             "--device=/dev/net/tun"
+            "--network=docker-transmission"
           ];
           ports = [
             "13277:13277"
@@ -59,7 +78,7 @@
             "gluetun"
           ];
           extraOptions = [
-            "--network=service:gluetun"
+            "--network=docker-transmission"
           ];
           environment = {
             PUID = toString config.users.users.transmission.uid;