Exploration: Use Singularity Containers for DSS

### Why it needs to get done

For the DSS we want to execute containers. As an alternative to Docker Singularity containers come into play.

### What needs to get done

- Find out how to run GPU workloads with Singularity containers
- Find out how to run Docker containers in Singularity
- Research how run GPU workloads with IntelGPU devices

### When is the task considered done

We have clear understanding if Singularity is our way to deploy GPU workloads.

Start by investigating how Singularity runs GPU workloads, how it executes Docker containers, and how IntelGPU devices are supported. The task is done when there is a clear understanding of whether Singularity is suitable for deploying GPU workloads in the DSS.

Written by the indexing model from the issue text.