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FROM python:3.9-slim

ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV PIP_NO_CACHE_DIR=1
ENV PIP_DISABLE_PIP_VERSION_CHECK=1

ENV HF_HOME=/tmp/huggingface_cache
ENV TRANSFORMERS_CACHE=/tmp/huggingface_cache/transformers
ENV HF_DATASETS_CACHE=/tmp/huggingface_cache/datasets
ENV TORCH_HOME=/tmp/torch_cache
ENV TOKENIZERS_PARALLELISM=false

ENV OMP_NUM_THREADS=1
ENV MKL_NUM_THREADS=1
ENV OPENBLAS_NUM_THREADS=1

RUN apt-get update && apt-get install -y \
    ffmpeg \
    espeak-ng \
    libsndfile1 \
    cmake \
    build-essential \
    pkg-config \
    gcc \
    g++ \
    curl \
    wget \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

RUN pip install --no-cache-dir --upgrade pip setuptools wheel \
    && pip install --no-cache-dir sentencepiece \
    && pip install --no-cache-dir torch==2.0.1 torchaudio==2.0.2 \
       --index-url https://download.pytorch.org/whl/cpu

WORKDIR /code

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

RUN useradd --create-home app \
    && chown -R app:app /code /tmp

USER app

HEALTHCHECK --interval=30s --timeout=30s --start-period=60s \
    CMD curl -f http://localhost:7860/health || exit 1

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