Run from docker-compose:

version: "3.8"
services:
 watchtower:
   image: containrrr/watchtower:latest
   container_name: watchtower
   environment:
     - TZ=Europe/Warsaw
     - WATCHTOWER_CLEANUP=true
     - WATCHTOWER_INCLUDE_STOPPED=true
     - WATCHTOWER_REVIVE_STOPPED=false
     - WATCHTOWER_SCHEDULE=0 0 2 * * *
     - WATCHTOWER_ROLLING_RESTART=true
   volumes:
     - /var/run/docker.sock:/var/run/docker.sock
   restart: unless-stopped

Refer to docs for additional variables/changes to above: Arguments - Watchtower (containrrr.dev)