speed up gpu module by converting from copy to bind

[lastephey]

Try to address #51

Looks like it shaves off about 2 seconds from startup

Test on muller:

stephey@nid001036:~> time podman-hpc run --rm --gpu nvcr.io/nvidia/pytorch:23.05-py3 date

With copy:

real	0m4.126s
user	0m0.331s
sys	0m0.109s

With bind:

real	0m2.037s
user	0m0.318s
sys	0m0.124s
stephey@nid001036:~> 

[danfulton]

lgtm