Docker container update error

FROM python:3.7

ENV PYTHONUNBUFFERED 1

RUN apt-get update -y && apt-get install xvfb -y && apt-get install xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic -y && apt-get install wkhtmltopdf -y

RUN mkdir /code

WORKDIR /code

COPY requirement.txt /code/

RUN pip install -r requirement.txt

COPY . /code/

COPY ./config.ini.dev.example /code/config.ini

EXPOSE 8000

CMD python manage.py runserver 0.0.0.0:8000

here is above my docker file but i run gitlab pipeline it show error like this please refer attached screenshot

please help in this

please suggests me in this

Iam waiting for this

Are you behind a VPN or using a proxy?

yes using VPN ,but it failed

the issue with your vpn not the Dockerfile. try to disbale it

no many pipeline running ,but not this one

using VPN many pipeline running ,but not this one

E: Unable to locate package xvfbThe command '/bin/sh -c apt-get update -y && apt-get install xvfb -y && apt-get install xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic -y && apt-get install wkhtmltopdf -y' returned a non-zero code: 100
```it show error like this

I tried your Dockefile and it woks well. Check temporary failure resolving error

how to check this and troubleshoot this

As I mentioned, this issue is related to the VPN. try to disable it

without vpn i cannot run this
gitlab run with vpn only

any solution because without vpn i cannot run this
gitlab run with vpn only