Docker-in-docker runner out of space again

In this repo, we try to build a container with the Nvidia SDK. Sadly, the runner seems to be too small again: https://git.geomar.de/scientific_computing_infrastructure/nvidia-compiler-sdk-container/-/jobs/56190 (The multi-version SDK we use here needs a few GB during installation.)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information