Hard-coded OS version in .github/workflows/cuda/Linux.sh

[morsingher]

Hi, note that the Ubuntu version passed as --build-arg in the Dockerfile is not propagated to .github/workflows/cuda/Linux.sh:

OpenSplat/.github/workflows/cuda/Linux.sh

Line 12 in 4d70016

OS=ubuntu2004

I'm not sure that this is a bug, but surely it would be nice to be consistent. Also, at least for Ubuntu 18.04 and CUDA 11.3, cuDNN is not installed and libtorch fails to build later. Again, I'm not sure that these two things are related. Will update if I have news.

Thanks for your work anyway :)

[pfxuan]

Ubuntu 18.04 has reached its end of life, making it challenging to install compatible CUDA and dependency versions. As you suggested, I removed the hard-coded OS version and also enabled Ubuntu 20.04 based docker build via PR #87. Wish this change could provide some help for your current setup.

Thank you for your feedback!