adjust worker for mysql, add more stable background process

docker-compose.yaml

@@ -17,6 +17,23 @@ services:
       - PYTHONUNBUFFERED=1
     ports:
       - 127.0.0.1:80:80
+  worker:
+    image: container-registry.infra.dubyatp.xyz/bellscheduler/app:latest-testing
+    restart: always
+    entrypoint: python3
+    command: "-m worker"
+    environment:
+      - MYSQL_USER=root
+      - MYSQL_PASSWORD=notasecuresecretkeyonlyuseforlocaldevelopment
+      - MYSQL_HOST=db
+      - MYSQL_PORT=3306
+      - MYSQL_DB=bellscheduler
+      - SECRET_KEY=notasecuresecretkeyonlyuseforlocaldevelopment
+      - NODE_NAME=local
+      - POD_NAME=local
+      - FLASK_ENV=development
+      - FLASK_DEBUG=1
+      - PYTHONUNBUFFERED=1    
   db:
     image: mariadb:10.7.8-focal
     restart: always