How to Update Graylog version in docker

I am new to graylog, I have installed graylog in docker and after installing it I observed 2 notifications one is related to Graylog Upgrade. Can someone tell me how to update it using docker commands?

Note: First in need to take backup of my data and then I need to update it to version 2.4.6.

Note 2: I have already referred the documentation in graylog.

http://docs.graylog.org/en/2.4/pages/upgrade.html

http://docs.graylog.org/en/2.4/pages/installation/docker.html

Graylog Installation process:

docker run --name mongo -d mongo:3
docker run --name elasticsearch \
-e "http.host=0.0.0.0" -e "xpack.security.enabled=false" \
-d docker.elastic.co/elasticsearch/elasticsearch:5.6.2
docker run --link mongo --link elasticsearch \
-p 9000:9000 -p 12201:12201 -p 514:514 \
-e GRAYLOG_WEB_ENDPOINT_URI="http://127.0.0.1:9000/api" \
-d graylog/graylog:2.4.0-1

First i have installed graylog with my own volumes

docker run --link mongo --link elasticsearch \
           -p 9000:9000 -p 12201:12201 -p 514:514 \
           -e GRAYLOG_WEB_ENDPOINT_URI="http://127.0.0.1:9000/api" \
           -d graylog/graylog:2.4.0-1

Now stop graylog using

docker stop [graylog Container ID]

Now remove container from docker

docker rm [graylog Container ID]

Now Remove docker image

docker rmi [graylog Image ID]

Now again install graylog by changing the graylog version

docker run --link mongo --link elasticsearch \
           -p 9000:9000 -p 12201:12201 -p 514:514 \
           -e GRAYLOG_WEB_ENDPOINT_URI="http://127.0.0.1:9000/api" \
           -d graylog/graylog:2.4.6-1

Note: Only remove graylog not mongoDB/Elasticsearch. Then you won't loose any data.