Docker package installation expects data entry

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I’m trying to install opencv on docker image, but docker not reads stdin

Dockerfile

FROM ubuntu:18.04
RUN apt-get update 
    && apt-get install tesseract-ocr -y 
    tesseract-ocr-rus 
    ffmpeg 
    python3 
    #python-setuptools 
    python3-pip 
    python3-opencv 
    && apt-get clean 
    && apt-get autoremove


RUN mkdir -p /usr/src/app 

WORKDIR /usr/src/app

COPY ./server /usr/src/app
COPY ./requirements.txt /usr/src/app

RUN python3 -m pip install --upgrade pip
RUN pip3 install -r requirements.txt

RUN ls

EXPOSE 8000

CMD [ "python3", "./manage.py", "runserver", "0.0.0.0:8000" ]

Terminal:

...
debconf: falling back to frontend: Readline
Configuring tzdata
------------------

Please select the geographic area in which you live. Subsequent configuration
questions will narrow this down by presenting a list of cities, representing
the time zones in which they are located.

  1. Africa      4. Australia  7. Atlantic  10. Pacific  13. Etc
  2. America     5. Arctic     8. Europe    11. SystemV
  3. Antarctica  6. Asia       9. Indian    12. US

He expects data entry

How can i pass data entry or how to input data?

Source: Docker Questions