Add Docker, Nix, devcontainer, and comprehensive setup documentation

[Copilot]

Adds project setup configurations for multiple development environments: Docker, Nix, GitHub Codespaces, plus comprehensive documentation.

Configuration Files

Docker

• Dockerfile: Multi-stage build with Rust 1.83, optimized runtime image
• docker-compose.yml: Production and development services with volume mounting
• .dockerignore: Build context optimization

Nix

• flake.nix: Modern flakes with dev shell and package definition
• shell.nix: Traditional Nix shell compatibility
• .envrc: Direnv integration for auto-activation

Devcontainer

• .devcontainer/devcontainer.json: VS Code configuration for Codespaces with Rust toolchain

Development Tools

• Makefile: Common commands (build, test, docker, lint)
• .github/workflows/docker.yml: CI for Docker builds with proper GITHUB_TOKEN permissions

Documentation

SETUP.md (9KB): Environment setup for local, Docker, Nix, and Codespaces

docs/

• QUICK-START.md: Quick reference for all setup methods
• CI-CD.md: Workflow documentation and best practices
• README.md: Documentation index

Usage Examples

# Docker
docker compose up dev

# Nix
nix develop

# Make
make all  # format, lint, test, build

# Codespaces - zero config, click and start

Updated README.md with references to new configurations and .gitignore for better artifact handling.

Original prompt

Thêm config cho setup project

• ci/cd dành cho việc build, test, release
• Docker: nếu cần thiết
• Docker compose nếu làm việc với nhiều dịch vụ và dùng docker làm mt phát triên
• Nix: Thiết lập môi trường làm việc cho người dùng nix
• Devcontainer config: Config moi trường dành cho GitHub codespace
• Setup guild: Tài liệu dành cho việc cài đặt

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