Update to the latest Portainer CE using docker commands

update_portainer.sh

#!/bin/bash
#Assuimg your current Portainer container name is simply "portainer"
docker stop portainer
docker rm portainer
docker image ls | grep portainer | awk '{print $3}' | xargs -I {} docker image rm {}
docker pull portainer/portainer-ce:latest
docker run -d -p 8000:8000 -p 9000:9000 -p 9443:9443 --name=portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce