* feat: add REPO/BRANCH build args for llama.cpp
- Introduce ARG REPO and ARG BRANCH to replace the hardcoded git clone with: `git clone -b ${BRANCH} --single-branch --recursive ${REPO}` . This allows overriding the llama.cpp repository and branch at build time via `--build-arg`.
- Update `docs/building.md` to recommend using `--build-arg` instead of updating the file
* fix: remove trailing backslash
Trevor Starick
95aaf23a47