Additional Information I checked the dir and file permissions in /var/lib in the docker container: ...

docker compose -f compose.openvas.yaml run --rm greenbone-feed-sync ls -la /var/lib/ total 52 drwxr-xr-x 1 gvm gvm 4096 Mar 3 13:10 . drwxr-xr-x 1 root root 4096 Feb 3 00:00 .. drwxr-xr-x 1 gvm gvm ...