Data location in docker

So I have installed the docker version on Ubuntu and the files are not in any of the suggested directories.

plxadm@plex:~$ sudo ls /var/snap
core18  core20  lxd  snapd
plxadm@plex:~$ sudo ls /mnt

Has anyone got any better ideas?

hello @tune welcome to the forum :handshake:

I split you post into separate topic as it not related to snap installation as previous thread.

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you find information about official docker image and volumes it uses are here GitHub - nextcloud/docker: ⛴ Docker image of Nextcloud

Please use the search - lot of issues have been discussed already.