Dockerfile

# Multi-stage Docker build for optimized image size

# Stage 1: Builder
FROM python:3.11-slim as builder

# Install uv
COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv

# Set working directory
WORKDIR /app

# Copy dependency files first for better layer caching
COPY pyproject.toml ./

# Install dependencies using uv (extract dependencies from pyproject.toml)
# This layer will be cached unless pyproject.toml changes
RUN uv pip install --system --no-cache \
    fastapi>=0.104.1 \
    uvicorn[standard]>=0.24.0 \
    sqlalchemy>=2.0.23 \
    alembic>=1.12.1 \
    asyncpg>=0.29.0 \
    redis>=5.0.1 \
    authlib>=1.2.1 \
    python-jose[cryptography]>=3.3.0 \
    bcrypt>=4.0.1 \
    python-multipart>=0.0.6 \
    pydantic>=2.5.0 \
    pydantic[email]>=2.5.0 \
    pydantic-settings>=2.1.0 \
    openai>=1.3.0 \
    instructor>=0.4.5 \
    langgraph>=0.0.40 \
    pdfplumber>=0.10.0 \
    aiofiles>=23.2.1 \
    python-dotenv>=1.0.0 \
    livekit>=0.11.0 \
    livekit-agents>=0.7.0 \
    docker>=6.1.0

# Stage 2: Runtime
FROM python:3.11-slim

# Install runtime dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN useradd -m -u 1000 appuser && mkdir -p /app && chown -R appuser:appuser /app

# Set working directory
WORKDIR /app

# Copy uv from builder
COPY --from=builder /usr/local/bin/uv /usr/local/bin/uv

# Copy installed 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

# Ensure PATH includes /usr/local/bin for livekit-agents command
ENV PATH="/usr/local/bin:${PATH}"

# Copy only necessary application files (excludes frontend, tests, etc. via .dockerignore)
# Copy source code last for better layer caching
COPY --chown=appuser:appuser src/ ./src/
COPY --chown=appuser:appuser alembic.ini ./
COPY --chown=appuser:appuser alembic/ ./alembic/

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:8000/health')" || exit 1

# Run migrations and start application
# Railway will override PORT via $PORT environment variable
CMD ["sh", "-c", "alembic upgrade head && uvicorn src.main:app --host 0.0.0.0 --port ${PORT:-8000}"]