Dockerfile

# Dockerfile
FROM python:3.10-slim

# install system deps for audio + ffmpeg
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      portaudio19-dev \
      ffmpeg \
      libsm6 \
      libxext6 \
    && rm -rf /var/lib/apt/lists/*

# set working dir
WORKDIR /home/user/app

# copy everything in
COPY . .

# upgrade pip & install Python deps
RUN pip install --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# finally launch
CMD ["python", "app.py"]