conda

Issues with conda:

1. bioconda channel is not added by default (see this issue on github,
2. conda singularity recipes does not work when trying to run the image (build works but when running as a basic user (not root), conda is installed in /usr/local and singularity is trying to write into a tmp directory in /usr/local).

Maybe a more complex conda recipe would work: https://github.com/sylabs/singularity/issues/5075 Indeed, I think conda needs at least to create and initiate an environment.

Moreover, we could automate the runscript line to fit the conda installed program or add a %app dedicated section.