Dockerfile

FROM python:3.11-slim

# ffmpeg lets the ASR pipeline decode the browser's WebM/Opus audio.
RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH" \
    HF_HOME=/home/user/.cache/huggingface

WORKDIR /home/user/app

COPY --chown=user requirements.txt .
# CPU-only torch keeps the image small — Whisper Small runs fine on CPU.
RUN pip install --no-cache-dir --user torch --index-url https://download.pytorch.org/whl/cpu \
    && pip install --no-cache-dir --user -r requirements.txt

COPY --chown=user . .

ENV PORT=7860
EXPOSE 7860

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