Dockerfile

# Dockerfile for the Hugging Face Spaces deployment of the Scientific
# Contribution Graph Explorer. When you copy this to a Space, rename it
# to `Dockerfile` (no extension).
#
# Build context expects this layout in the Space:
#     Dockerfile
#     demo.py           (the single-file FastAPI app)
#     demo_config.json  (renamed from demo_huggingface_demo_config.json)
#     requirements.txt  (renamed from demo_huggingface_requirements.txt)
#     README.md         (renamed from demo_huggingface_README.md, keep frontmatter)

FROM python:3.11-slim

# Graphviz is needed for the tree / tree-with-edges layouts.
RUN apt-get update \
 && apt-get install -y --no-install-recommends graphviz git ca-certificates \
 && rm -rf /var/lib/apt/lists/*

# HF Spaces sets HOME to /home/user; we follow the standard recipe.
RUN useradd -m -u 1000 user

# Pre-create /data so it works whether or not HF Persistent Storage is
# attached. When Persistent Storage is enabled it is mounted at /data
# and survives restarts; otherwise /data is just an empty in-container
# directory that gets wiped each cold boot (and the 7 GB tarball will
# be re-fetched on the next wake).
RUN mkdir -p /data && chown user:user /data

USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1 \
    HF_XET_HIGH_PERFORMANCE=1

WORKDIR $HOME/app

COPY --chown=user requirements.txt ./
RUN pip install --user --no-cache-dir -r requirements.txt

COPY --chown=user demo.py demo_config.json ./

EXPOSE 7860
# `demo.py` reads `demo_config.json` next to it on startup (data_path,
# bucket_uri, host, port). Override any field via env vars (SCG_DATA_PATH,
# SCG_BUCKET_URI, ...) or CLI flags if needed.
CMD ["python", "demo.py"]