Dockerfile

# Multi-platform base image (supports amd64, arm64)
FROM --platform=$TARGETPLATFORM python:3.12-slim

# Build arguments for multi-platform support
ARG TARGETPLATFORM
ARG BUILDPLATFORM

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PORT=8080 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# Install system dependencies (platform-agnostic)
# - gcc: for compiling Python extensions
# - libffi-dev: for cryptography package (required for MySQL 8.0)
# - curl: for health checks
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libffi-dev \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

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

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

# Copy application files
COPY src/ ./src/

# Create non-root user for security
RUN useradd -m -u 1000 appuser && \
    chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose the port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8080/health || exit 1

# Run the application with gunicorn for production
CMD ["gunicorn", "--bind", "0.0.0.0:8080", "--workers", "4", "--threads", "2", "--timeout", "300", "--access-logfile", "-", "--error-logfile", "-", "src.ec2.server:app"]