Dockerfile

# Builder stage
FROM python:3.9-slim-bullseye as builder

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

WORKDIR /app

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libc6-dev \
    python3-dev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

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

# Runtime stage
FROM python:3.9-slim-bullseye as runtime

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONPATH=/app

WORKDIR /app

# Copy Python dependencies from builder stage
COPY --from=builder /usr/local/lib/python3.9/site-packages/ /usr/local/lib/python3.9/site-packages/
COPY --from=builder /usr/local/bin/ /usr/local/bin/

# Install runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user for security
RUN addgroup --system app && adduser --system --group app

# Create necessary directories with proper permissions
RUN mkdir -p /app/tmp/meeting_recordings /app/credentials

# Copy application code
COPY . .

# Set proper permissions
RUN chmod -R 755 /app && \
    chown -R app:app /app/tmp /app/credentials

# Switch to non-root user
USER app

# Expose port
EXPOSE 8000

# Healthcheck to verify API is responding
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Start the API server
CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]