Apptainer (formerly Singularity)
Apptainer (formerly Singularity) is a container system designed for use on High Performance Computing (HPC) systems. It allows users to run both Docker and Singularity containers.
From the Docker website: "A container image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings."
