chore: Initialize Docker setup

[tomas-gajarsky]

• Add Dockerfile based on CUDA 12.1 image
• Add compose config to build and run on GPU easily
• Add pyproject.toml with poetry dependencies
• Add poetry.lock with locked and verified dependency versions
• Add ignore files with common setup for Python repos
• Add debug logging and error caching to the torchrun main script
• Add build workflow testing docker setup