Dockerfile

# Stage 1: Builder
FROM python:3.8-bullseye as builder

RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential cmake git curl wget \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --user --upgrade pip setuptools wheel && \
    pip install --user torch==2.2.1 --index-url https://download.pytorch.org/whl/cpu

# Stage 2: Runtime
FROM python:3.8-slim

COPY --from=builder /root/.local /root/.local
ENV PATH=/root/.local/bin:$PATH

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt \
    && find /root/.local -type d -name tests -exec rm -rf {} +

WORKDIR /app
COPY . /app

CMD ["python", "train.py"]