Install packages that depends on coreultils' `arch`

Hello,

I am trying to build a docker image with some software that needs OpenThreads. I was trying to build it manually since I was not able to find it on the package manager. The problem is the build process needs the `arch` command from coreutils.

I was thinking about creating a bash_script that always return x86_64. But maybe you have a better idea.

Thank you very much.