RabbitMQ docker container

If you have RabbitMQ on a docker container, you can first

docker ps

docker exec -it <YOUR_CONTAINER> /bin/bash

rabbitmqctl change_password <USERNAME> <NEWPASSWORD>

or 

docker compose

version: "3.9"
services:
 rabbitmq:
   image: rabbitmq:3-management
   container_name: rabbitmq
   ports:
     - 5672:5672
     - 15672:15672
   volumes:
     - rabbitmq_data:/var/lib/rabbitmq
volumes:
 rabbitmq_data: