Cant find /var/atlassian/application-data/bitbucket on Docker

[Emre Mustafa Oruc]

Hi, I would like to migrate our Bitbucket 7.21.18 instance to a Docker environment. In the docs I often read that I need to give permissions on the path /var/atlassian/application-data/bitbucket. Unfortunately, this folder does not exist for me, I only have the volumes, data and image. There is no folder under var with Atlassian.
Does anyone know where to look?