Update README.md

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Copy requirements first for better layer caching
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create configs directory
+RUN mkdir -p configs
+
+# Expose the API port
+EXPOSE 8000
+
+# Run the application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]