v2.3.3

Added

• Docker containerization with automatic builds via GitHub Actions
• Container images published to ghcr.io/deeplearnphysics/larcv2
• Docker helper script (docker-run.sh) for easier container usage
• Version tracking in python/larcv/version.py
• Comprehensive Docker documentation in README

Changed

• Modernized Dockerfile with ROOT 6.34.00 and Ubuntu 24.04 LTS
• Updated build system to support containerized builds
• Migrated from Travis CI to GitHub Actions for CI/CD
• Updated badges in README with modern alternatives

Removed

• Deprecated Travis CI integration
• Old Singularity Hub references

Full Changelog: v2_3_2...v2.3.3