I’ve just pushed 9d7b6d3d9a with a new flag to specify the dump folder path to set where the dump zip file will be saved.
With docker, you should be able to use it like this, assuming you have mounted a folder to /dump where you want to retrieve the dump file:
docker exec vikunja_app /app/vikunja/vikunja dump -p /dump
I’ve also pushed a fix in c2b116de70 to make sure the files are always retrieved with their absolute path. This should fix the problem where files could not be retrieved despite them actually existing on disk.
Please check with the next unstable build (should be ready for deployment in ~45min).