Just a quick test:
docker run --name elixirhexpm --rm -it hexpm/elixir:1.15.4-erlang-26.0.2-debian-buster-20230612-slim
Memory usage is 5MB; then I ran iex in the container. Memory usage is 2GB.
hexpm/elixir:1.15.4-erlang-25.3.2.4-debian-buster-20230612-slim (so OTP 25) has the exact same issue, but funny enough the memory usage is 1.5GB in stead of 2.0GB.
I had some screenshots as well in the (closed and duplicated topic): Elixir docker container very high memory usage
