Dockerfile

# Build stage
FROM python:3.11-slim as builder

# Set working directory
WORKDIR /app

# Install build dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends gcc python3-dev && \
    rm -rf /var/lib/apt/lists/*

# Copy requirements first to leverage Docker cache
COPY requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt

# Final stage
FROM python:3.11-slim

# Create non-root user for security
RUN useradd -m -r appuser

# Set working directory
WORKDIR /app

# Copy only necessary files from builder
COPY --from=builder /app/wheels /wheels
COPY --from=builder /app/requirements.txt .

# Install dependencies
RUN pip install --no-cache /wheels/*

# Copy application code
COPY . .

# Set ownership to non-root user
RUN chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose port (adjust if your server uses a different port)
EXPOSE 8000

# Command to run the server
CMD ["python", "server.py"]