FATAL: While performing build: conveyor failed to get: neither yum nor dnf in path

[Thapeachydude]

Hi,

I'm getting the following error:

Building singularity container...
INFO:    User not listed in /etc/subuid, trying root-mapped namespace
INFO:    The %post section will be run under fakeroot
WARNING: 'nodev' mount option set on /tmp, it could be a source of failure during build process
INFO:    Starting build...
FATAL:   While performing build: conveyor failed to get: neither yum nor dnf in path

I'm trying to build an image on an HPC, where I unforunately don't have sudo rights.

Any insights would be helpful!