Please update the first example at https://github.com/ArangoGutierrez/Singularity-tutorial/blob/master/INSTANCES.md#lolcow-useless-example to make use of SIF.
Please update the first example at https://github.com/ArangoGutierrez/Singularity-tutorial/blob/master/INSTANCES.md#lolcow-useless-example to make use of SIF.