# Hugging Face Docker Space -> KWR EPANET MCP server over Streamable HTTP.
#
# This variant installs the server from PyPI (identical code to this repo's
# src/, which is byte-for-byte upstream 0.2.0) instead of building local
# source. That keeps the build robust even if src/ or uv.lock aren't present
# in the Space's build context. The only files this image needs from the
# context are app.py and the Networks/ folder.
FROM python:3.11-slim

# libgomp1: OpenMP runtime some numpy / EPANET-toolkit wheels expect.
RUN apt-get update && apt-get install -y --no-install-recommends libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces convention: non-root uid 1000.
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PORT=7860 \
    MPLCONFIGDIR=/home/user/app/.mpl \
    PYTHONUNBUFFERED=1

WORKDIR /home/user/app

# Install the server + transport deps directly (no local build step, so a
# missing src/ or uv.lock can't fail the build). mcp-server-epanet pulls
# epyt, mcp[cli], numpy, matplotlib as dependencies.
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir "mcp-server-epanet==0.2.0" uvicorn

# Copy whatever the context has (app.py, Networks/, README, ...).
COPY --chown=user . .

EXPOSE 7860
CMD ["python", "app.py"]