Merge pull request #290 from workmaster2n/workmaster2n-username-password-readme

RabbitMQ: Add instructions on how to set default user and password

rabbitmq/content.md

@@ -61,6 +61,20 @@ You can access it by visiting `http://container-ip:15672` in a browser or, if yo
 
 You can then go to `http://localhost:8080` or `http://host-ip:8080` in a browser.
 
+## Setting default user and password
+
+If you wish to change the default username and password of `guest` / `guest`, you can do so with the `RABBITMQ_DEFAULT_USER` and `RABBITMQ_DEFAULT_PASS` environmental variables:
+
+	docker run -d --hostname my-rabbit --name some-rabbit -e RABBITMQ_DEFAULT_USER=user -e RABBITMQ_DEFAULT_PASS=password rabbitmq:3-management
+
+You can then go to `http://localhost:8080` or `http://host-ip:8080` in a browser and use `user`/`password` to gain access to the management console
+
+## Setting default vhost
+
+If you wish to change the default vhost, you can do so wiht the `RABBITMQ_DEFAULT_VHOST` environmental variables:
+
+	docker run -d --hostname my-rabbit --name some-rabbit -e RABBITMQ_DEFAULT_VHOST=my_vhost rabbitmq:3-management
+
 ## Connecting to the daemon
 
 	docker run --name some-app --link some-rabbit:rabbit -d application-that-uses-rabbitmq