RUN apt-get update && apt-get install -y \
    poppler-utils \
    libpoppler-cpp-dev \
    pkg-config \
    tesseract-ocr \
    tesseract-ocr-kor \
    libtesseract-dev \
    libleptonica-dev \
    ghostscript \
    python3-opencv \
    && rm -rf /var/lib/apt/lists/*