Wrappers and launchers

A basic wrapper can be as follows:

#!/bin/bash
DIR=`dirname $(readlink -f $0)`
IMG=/path/to/singularity_image.simg
singularity exec $IMG $(basename "$0") "$@"

In this way if we have a single image with multiple binaries to expose, we can make as many symbolic links as needed to the launcher that will execute $(basename "$0") as binary.