Trying to deploy the trainhandler-client docker image to an Ampere Altra instance (arm64 architecture), we get the following:

trainhandler-client-1 | exec /usr/local/bin/docker-entrypoint.sh: exec format error

Although the exec format error can also be caused by e.g. whitespace or header errors in the script, that is not the case here, because the image runs fine on x86.

Moreover, it looks like the image was not built with multi-platform support (buildx):