Build the root image once, then derive the rootless variant from it
using a small inline Dockerfile that adds the non-root user and chowns
the writable directories. This halves the number of CI jobs (4 → 2) and
eliminates the redundant full CUDA compilation for the rootless variant.
- remove RUN_UID build arg from build-image.sh
- derive rootless image inline after root build completes
- collapse variant matrix out of unified-docker.yml
- push both root and rootless tags in a single CI job
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Benson Wong
7b2b82777f