Add Docker Compose setup

[Presmanes3]

Problem

The project has no containerization. Deployment relies on run_api.sh and manual setup. There is no way to spin up the full stack (backend + frontend + database) with a single command.

Proposed solution

Add Dockerfiles and Docker Compose:

├── backend/Dockerfile      # Python + Uvicorn
├── frontend/Dockerfile     # Nginx serving React build
├── docker-compose.yml     # backend + frontend + PostgreSQL
├── .dockerignore
└── docker/nginx/default.conf # Nginx config

Tasks

• [ ] Create backend Dockerfile (multi-stage, dependencies + runtime)
• [ ] Create frontend Dockerfile (build React with Node, serve with Nginx)
• [ ] Create docker-compose.yml (backend, frontend, postgres services)
• [ ] Create .dockerignore
• [ ] Configure env vars for Docker (ports, database URL, etc.)
• [ ] Update CI to include Docker build step
• [ ] Add Makefile or scripts for common Docker commands
• [ ] Document Docker usage in README

[tanikush]

Hi @Presmanes3 , can you please assign this issue to me? I would like to work on it.