Problems running a Docker image built with an ARMv7 base image on a x86 desktop

I am trying to run a Docker image based on an ARMv7 container on a x86 computer. According to this site, it is possible by running this container first.

docker run --rm --privileged hypriot/qemu-register

This command works on Mac OS X and on an Ubuntu 19 virtual machine (with a Windows 10 host). However, when I try to run on CentOS 7 and one of the AWS A1 instances, I get the message standard_init_linux.go:211: exec user process caused "exec format error". The CPU for the CentOS 7 is an Intel Core i7-8700K and AWS A1 is based on the Graviton processor.

Anyone know what I’m missing here?

The complaint on the AWS A1 instance is with installing miniconda. I’m not sure if there is a way to say yes (to continue to install) since the -b flag already is supposed to get miniconda to install silently.

Step 6/11 : RUN /bin/bash /tmp/ -b -p /opt/miniconda
 ---> Running in ab9b5fef6837
    Your processor does not appear to be an armv7l.  This software
    was sepicically build for the Raspberry Pi 2 running raspbian wheezy
    (or above).
    Are sure you want to continue the installation? [yes|no]
[no] >>> Aborting installation

Source: StackOverflow