Getting vsn 2.15 when I thought I asked for 2.18.2 (n00b mistake?)

[MattWeatherford]

Running on Debian 10 with docker-ce from the docker apt repository

I run
docker pull geonode/geoserver:2.18.2
docker run --name "geoserver" -v /var/run/docker.sock:/var/run/docker.sock -v /opt/geoserver/data/:/geoserver_data/data -d -p 8080:8080 geonode/geoserver

and the web interface at http://localhost:8080/geoserver/web/ still says:

Welcome
This GeoServer belongs to .
This GeoServer instance is running version 2.15.1. For more information please contact the administrator.

About geoserver shows:

Build Information
GeoServer Version
2.15.1
Git Revision
6028a3cc138224e46b5bf949730043d15ef6a370
Build Date
29-Apr-2019 07:40
GeoTools Version
21.1 (rev 5df58c1ab9b9585655b2fc132e8f2b15c8bf5dae)
GeoWebCache Version
1.15.1 (rev 8ed864d6bb0cbc7e197f35511eae775676493b6b/8ed864d6bb0cbc7e197f35511eae775676493b6b)

Docker images shows:

root@:/opt/geoserver# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
geonode/geoserver 2.18.2 e7705bad9aa0 5 days ago 1.17GB
geonode/geoserver latest 068f05e24faa 21 months ago 953MB
root@:/opt/geoserver#
root@:/opt/geoserver#
root@:/opt/geoserver# docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
34f71ba69a3f geonode/geoserver "/usr/local/tomcat/t…" 7 minutes ago Up 7 minutes 0.0.0.0:8080->8080/tcp geoserver
root@:/opt/geoserver#

I am confused - guidance appreciated !

-Matt