use AYON_USERNAME during publishing

client/ayon_core/cli_commands.py

@@ -64,9 +64,10 @@ class Commands:
             get_global_context,
         )
 
-        # Register target and host
+        import ayon_api
         import pyblish.util
 
+        # Register target and host
         if not isinstance(path, str):
             raise RuntimeError("Path to JSON must be a string.")
 
@@ -86,6 +87,18 @@ class Commands:
 
         log = Logger.get_logger("CLI-publish")
 
+        # Make public ayon api behave as other user
+        # - this works only if public ayon api is using service user
+        username = os.environ.get("AYON_USERNAME")
+        if username:
+            # NOTE: ayon-python-api does not have public api function to find
+            #   out if is used service user. So we need to have try > except
+            #   block.
+            try:
+                ayon_api.set_default_service_username(username)
+            except ValueError:
+                pass
+
         install_ayon_plugins()
 
         manager = AddonsManager()