Dockerfile

# Use Python 3.10 slim image as base
FROM python:3.10-slim

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    DEBIAN_FRONTEND=noninteractive

# Install system dependencies required for OpenCV and TensorFlow
RUN apt-get update && apt-get install -y --no-install-recommends \
    # OpenCV dependencies
    libgl1-mesa-glx \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    libgomp1 \
    # General utilities
    wget \
    curl \
    # For downloading images from URLs
    ca-certificates \
    # Cleanup
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Set working directory
WORKDIR /app

# Copy requirements first (for better caching)
COPY requirements.txt .

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

# Copy application code
COPY . .

# Create necessary directories
RUN mkdir -p /app/saved_puzzles \
    /app/temp \
    /app/logs && \
    chmod 755 /app/saved_puzzles \
    /app/temp \
    /app/logs

# Expose port 8000
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD curl -f http://localhost:8000/puzzle_solver/api/health || exit 1

# Run the application
CMD ["python", "app.py"]