initial docker setup

.dockerignore

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+__pycache__/
+.venv/
+*.pyc
+.env

Dockerfile

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+# ---------- Backend Dockerfile ----------
+
+# Use lightweight Python image
+FROM python:3.13-slim
+
+# Set working directory
+WORKDIR /app
+
+# Copy dependency files
+COPY requirements.txt .
+
+# Install dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy source code
+COPY backend .
+
+# Expose FastAPI port
+EXPOSE 8000
+
+# Run FastAPI app
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8000"]