FROM ubuntu:24.04

ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
        python3 python3-pip python3-venv \
        libgomp1 libstdc++6 curl unzip ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces recommends running as a non-root user with uid 1000.
# ubuntu:24.04 ships a default 'ubuntu' user already holding uid 1000 — drop it first.
RUN userdel -r ubuntu 2>/dev/null || true; useradd -m -u 1000 user
USER user
ENV HOME=/home/user

# isolated venv (Ubuntu 24.04 is PEP-668 externally-managed)
RUN python3 -m venv /home/user/venv
ENV PATH=/home/user/venv/bin:$PATH

RUN pip install --no-cache-dir \
        "gradio==4.44.1" "fastapi==0.115.4" \
        "huggingface_hub>=0.25,<1.0" "requests>=2.31"

WORKDIR /home/user/app
COPY --chown=user app.py .

EXPOSE 7860
CMD ["python3", "app.py"]