Dockerfile

# Stage 1: Build
FROM python:3.12-slim-bookworm as builder

# Install build dependencies (gcc, Python headers, etc.)
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    python3-dev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Set the working directory
WORKDIR /app

# Copy only the requirements file to take advantage of Docker's caching
COPY requirements.txt .

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

# Stage 2: Runtime
FROM python:3.12-slim-bookworm

# Set the working directory
WORKDIR /app

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

# Copy the application code
COPY . .

# Run the application
CMD ["python", "-u", "main.py"]