FROM ubuntu:20.04

# Set environment variables to avoid interactive prompts
ENV DEBIAN_FRONTEND=noninteractive
ENV TZ=America/New_York

# Install system dependencies
RUN apt-get update && apt-get install -y \
    python3 \
    python3-pip \
    python3-dev \
    build-essential \
    libssl-dev \
    libffi-dev \
    python3-setuptools \
    git \
    cmake \
    tzdata \
    && rm -rf /var/lib/apt/lists/*

# Install Python packages
RUN pip3 install --no-cache-dir \
    SimpleITK \
    pyradiomics \
    scikit-learn \
    numpy \
    pandas \
    matplotlib \
    scipy \
    nibabel

WORKDIR /app
CMD ["tail", "-f", "/dev/null"]