dockerfile

@@ -13,4 +13,5 @@ RUN apk update \
     postgresql-dev
 
 RUN pip install --no-cache-dir -r requirements.txt
+RUN sh ./utils/patch/aiogram-patch-loop.sh
 CMD ["python3", "bot.py"]

utils/patch/aiogram-loop.patch

@@ -0,0 +1,20 @@
+--- executor.py	2022-10-12 22:22:11.820907568 +0300
++++ executor.py.1	2022-10-12 22:23:26.660883642 +0300
+@@ -105,7 +105,7 @@
+                            check_ip=check_ip,
+                            retry_after=retry_after,
+                            route_name=route_name)
+-    executor.run_app(**kwargs)
++    executor.run_app(loop=loop, **kwargs)
+ 
+ 
+ def start(dispatcher, future, *, loop=None, skip_updates=None,
+@@ -303,6 +303,8 @@
+         :return:
+         """
+         self.set_webhook(webhook_path=webhook_path, request_handler=request_handler, route_name=route_name)
++        if "loop" not in kwargs:
++            kwargs["loop"] = self.loop
+         self.run_app(**kwargs)
+ 
+     def start_polling(self, reset_webhook=None, timeout=20, relax=0.1, fast=True,

utils/patch/aiogram-patch-loop.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+#https://github.com/aiogram/aiogram/pull/795
+
+PYTHON_LIB_PATH=$(python3 -c 'import sys; print(sys.path[4])')
+patch --directory=$PYTHON_LIB_PATH/aiogram/utils/ -i $(pwd)/utils/patch/aiogram-loop.patch