Every time I forget about this I end up reading this post and also this one: BEAM docker release GitHub action - a GitHub action to build a docker container from a BEAM (Elixir/Erlang) release - #2 by asabil - Libraries - Erlang Programming Language Forum - Erlang Forums
TL;DR, adding ERL_FLAGS="+JPperf true" to your env vars should solve the issue with QEMU when building for linux/arm64 on a linux/amd64 host.
