Dockerfile

# Multi-stage build for TaskProvision
FROM python:3.11-slim as builder

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

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create and switch to app user
RUN groupadd -r taskprovision && useradd -r -g taskprovision taskprovision
RUN mkdir -p /app && chown taskprovision:taskprovision /app

# Set work directory
WORKDIR /app

# Copy requirements first for better caching
COPY requirements.txt requirements-dev.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Production stage
FROM python:3.11-slim as production

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PATH="/app/venv/bin:$PATH" \
    ENVIRONMENT=production

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN groupadd -r taskprovision && useradd -r -g taskprovision taskprovision

# Create directories
RUN mkdir -p /app /app/logs /app/uploads && \
    chown -R taskprovision:taskprovision /app

# Copy Python packages from builder
COPY --from=builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Switch to app user
USER taskprovision
WORKDIR /app

# Copy application code
COPY --chown=taskprovision:taskprovision . .

# Install TaskProvision in development mode
RUN pip install -e .

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Start command
CMD ["uvicorn", "taskprovision.main:app", "--host", "0.0.0.0", "--port", "8000"]