winery fails to install when using the docker-compose.override.yml

[alphaOmegaOnGithub]

I get the following error when running docker compose up with a docker-compose.override.yml with the following settings:
winery:
environment:
WINERY_REPOSITORY_PATH: /var/opentosca/repository
# WINERY_REPOSITORY_URL: https://github.com/OpenTOSCA/tosca-definitions-example-applications
WINERY_REPOSITORY_URL: https://github.com/UST-QuAntiL/tosca-definitions-qc-applications
# # use a modeling repository that is stored on the host system
# volumes:
# - :/var/opentosca/repository
# # e.g., - C:\tosca-definitions\tosca-definitions-qc-applications:/var/openstosca/repository

Just following the 1. tutorial in the opentosca-docker project.

file: /opt/winery/.winery/winery.yml
opentosca-dind-1 | time="2023-05-18T19:10:30.060778324Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address"
opentosca-winery-1 | 19:10:30.247 [main] ERROR o.e.w.r.b.filebased.GitBasedRepository :172 - Error initializing Git.
opentosca-winery-1 | java.io.IOException: Creating directories for /var/opentosca/repository/.git failed
opentosca-winery-1 | at org.eclipse.jgit.util.FileUtils.mkdirs(FileUtils.java:396)
opentosca-winery-1 | at org.eclipse.jgit.internal.storage.file.FileRepository.create(FileRepository.java:234)
opentosca-winery-1 | at org.eclipse.jgit.lib.Repository.create(Repository.java:178)