usage issues with singularity

[waleadebayo]

Hi, excellent tool! just what we had had in mind for a while.
However I attempted usage via singularity but just can't seem to get dry run to work.

I changed the config parameter java -Dconfig.file=${PWD}/configs/SlurmAndSingularity.conf and added the singularity call to the docker pull/run commands , but still can't get through.

denied: requested access to the resource is denied
unauthorized: authentication required```

Looks like the image is unaccessible or I am modifying it wrongly?