You started looking the volumes:
user@ubuntu:~$ docker volume ls
DRIVER VOLUME NAME
local docker-lab_postgres_data
local b1aa150eb6ddb45084ff2b4554394c100c59a41c...
local client_postgress_db
local client_container_data
Then you try to remove:
user@ubuntu:~$ docker volume rm client_postgress_db
Error response from daemon: remove client_postgress_db: volume is in use - [553052b480de56abf196c34182780f1a86d35cdab989c15475e470ba7a67edee]
The solution is listing all containers, filtering by volume:
user@ubuntu:~$ docker ps -a --filter volume=client_postgress_db
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
553052b480de telix:1.0 "start-system.sh" 7 hours ago Exited (137) 6 hours ago client-app-1
Then remove the container:
user@ubuntu:~$ docker rm 553052b480de
553052b480de
And finally remove the volume:
user@ubuntu:~$ docker volume rm client_postgress_db
client_postgress_db
user@ubuntu:~$