Latest docker image installed is not latest?

Hi, I started as newbee with HA in docker on my Synology 2 weeks ago. I then installed latest version 0.104.3 docker container and got it running. Just now I wanted to update HA in docker (latets version on HA site is 0.105.3). I stopped the container and did a: ‘sudo docker pull homeassistant/home-assistant:latest’ and 3 files were pulled and unpacked (all the ither ones ‘alreay existed’). I then started my HA docker container again but on the version page it still says: Versin 0.104.3.
Am I doing something wrong?

You need to clear your container so the new image you pulled can be loaded.