add stderr to custom error output

Author: godbrigero

watchdog/process_starter.py

@@ -3,10 +3,19 @@
 import subprocess
 import shlex
 import importlib
+from typing import Callable
 
 from backend.deployment.util import RunnableModule
 
 
+import io
+
+
+class StderrLogger(io.StringIO):
+    def log_func(self, message: str):
+        error(message)
+
+
 def get_all_modules() -> list[RunnableModule]:
     backend_deploy = importlib.import_module("backend.deploy")
     backend_deploy = importlib.reload(backend_deploy)
@@ -39,4 +48,5 @@ def start_process(process_name: str, config_path: str):
         text=True,
         bufsize=1,
         universal_newlines=True,
+        stderr=StderrLogger(),
     )