Dockerfile

# Use Python 3.12 slim image as the base
FROM python:3.12-slim AS builder

# Set the working directory
WORKDIR /app

# Install dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Production stage
FROM python:3.12-slim

# Set up non-root user for better security
RUN groupadd -r appuser && useradd -r -g appuser appuser \
    && mkdir -p /app/data \
    && chown -R appuser:appuser /app

# Install curl for healthcheck
RUN apt-get update && apt-get install -y --no-install-recommends curl \
    && rm -rf /var/lib/apt/lists/*

# Set the working directory
WORKDIR /app

# Copy Python packages from builder stage
COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Copy application code with proper ownership
COPY --chown=appuser:appuser . .

# Ensure data directory exists with proper permissions
RUN mkdir -p /app/data && chown -R appuser:appuser /app/data

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 8000

# Command to run the application
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]