Error when building docker image

[Edumarek123]

My Dockerfile build is generating an error when buildind, every RUN command is generating an error.
pls help me solve, thanks

Dockerfile

FROM arm64v8/python:3.9.6-slim-buster

RUN apt-get -y update && apt-get -y upgrade

RUN pip install opencv-python
RUN pip install ifm3dpy

ADD app.py .

CMD [ "python", "./app.py" ]

Build command
sudo docker build . -t test

Error

=> ERROR [2/5] RUN apt-get -y update && apt-get -y upgrade                0.2s
------                                                                          
 > [2/5] RUN apt-get -y update && apt-get -y upgrade:
0.207 exec /bin/sh: exec format error
------
Dockerfile:3
--------------------
   1 |     FROM arm64v8/python:3.9.6-slim-buster
   2 |     
   3 | >>> RUN apt-get -y update && apt-get -y upgrade
   4 |     
   5 |     RUN pip install opencv-python
--------------------
ERROR: failed to solve: process "/bin/sh -c apt-get -y update && apt-get -y upgrade" did not complete successfully: exit code: 1

[lola-masson]

I am not able to reproduce this issue, the Dockerfile you provided build fine on my machine. Is the machine you are building on arm-based? If not you will need to install an emulator (we use qemu) to be able to cross compile.