diff --git a/infrastructure/templates/infrastructure/yml/service.yml b/infrastructure/templates/infrastructure/yml/service.yml
new file mode 100644
index 0000000..27c35ce
--- /dev/null
+++ b/infrastructure/templates/infrastructure/yml/service.yml
@@ -0,0 +1,4 @@
+gitea-service-group:
+  hosts:
+    {{ subdomain }}-host:
+      ansible_port: 2222
diff --git a/infrastructure/utils.py b/infrastructure/utils.py
index febed6e..f55a815 100644
--- a/infrastructure/utils.py
+++ b/infrastructure/utils.py
@@ -90,6 +90,13 @@ class Infra:
 
         return self.repo_path.joinpath(f"inventory/{subdomain}-backup.yml")
 
+    def _service_path(self, subdomain: str) -> Path:
+        """
+        utility method: get service file for a subdomain
+        """
+
+        return self.repo_path.joinpath(f"inventory/{subdomain}-service.yml")
+
     def _hostscript_path(self, subdomain: str) -> Path:
         """
         utility method: hostscript file for a subdomain
@@ -204,6 +211,14 @@ class Infra:
                 )
             )
 
+        service = self._service_path(subdomain)
+        with open(backup, "w", encoding="utf-8") as f:
+            f.write(
+                render_to_string(
+                    "infrastructure/yml/service.yml", context={"subdomain": subdomain}
+                )
+            )
+
         # hostscript = self.repo_path.join("inventory/hosts-scripts/{instance.name}-host.sh")
 
         self.write_hostscript(