Add Watchtower, fix main component import and update docs

docker-compose.yml

@@ -10,6 +10,16 @@ services:
     networks:
       - rubic-net
 
+  watchtower:
+    image: containrrr/watchtower
+    container_name: watchtower
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    command: --interval 60 --cleanup
+    restart: unless-stopped
+    networks:
+      - rubic-net
+
 networks:
   rubic-net:
     driver: bridge