ARG BASE_IMAGE=ghcr.io/meta-pytorch/openenv-base:latest
FROM ${BASE_IMAGE} AS builder

WORKDIR /app

RUN apt-get update && \
    apt-get install -y --no-install-recommends git && \
    rm -rf /var/lib/apt/lists/*

# Copy lock files first — maximises layer cache on dependency-only changes
COPY pyproject.toml uv.lock ./

# Ensure uv is available
RUN if ! command -v uv >/dev/null 2>&1; then \
        curl -LsSf https://astral.sh/uv/install.sh | sh && \
        mv /root/.local/bin/uv /usr/local/bin/uv; \
    fi

# Install dependencies (not the project itself yet) — cached layer
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-install-project --no-editable

# Copy full source and install the project package
COPY . /app
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-editable --extra dev

# ── Runtime stage ──────────────────────────────────────────────────────────────
FROM ${BASE_IMAGE}

WORKDIR /app

COPY --from=builder /app/.venv /app/.venv
COPY --from=builder /app /app

ENV PATH="/app/.venv/bin:$PATH"
ENV PYTHONPATH="/app:$PYTHONPATH"

HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

CMD ["bash", "start.sh"]