enables users to have full control of their environment
Singularity is a free, cross-platform and open-source computer program that performs operating-system-level virtualization also known as containerization.
One of the main uses of Singularity is to bring containers and reproducibility to scientific computing and the high-performance computing (HPC) world.
You can find the documentations on the Singularity docs page
No group membership or license is needed. Singularity can be used by all HLRN users by default.