Dockerfile

# Build stage
FROM python:3.12-slim AS builder

WORKDIR /app
COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
RUN apt-get update && apt-get install -y libsndfile1 ffmpeg && rm -rf /var/lib/apt/lists/*
COPY pyproject.toml uv.lock ./

ARG FLASK_ENV=production
ENV FLASK_ENV=$FLASK_ENV
RUN bash -c 'if [ "$FLASK_ENV" = "development" ]; then \
    echo "===> Development mode detected."; \
    uv sync --frozen --extra dev; \
    else \
    echo "===> Production mode detected."; \
    uv sync --frozen --no-dev; \
    fi'

# Runtime stage
FROM python:3.12-slim

WORKDIR /app
RUN apt-get update && apt-get install -y --no-install-recommends libsndfile1 ffmpeg && rm -rf /var/lib/apt/lists/*
COPY --from=builder /app/.venv /app/.venv
COPY . .
RUN useradd -m appuser && chown -R appuser:appuser /app
RUN mkdir -p /app/static/client/wav && chown -R appuser:appuser /app/static/client/wav
USER appuser

EXPOSE 5003
ENV PATH="/app/.venv/bin:$PATH"
CMD ["gunicorn", "run:app", "--bind", "0.0.0.0:5003", "--preload", "--timeout", "120"]