install ruby for M1 macbook

I am try to write something of how to install ruby on M1 macbook but here is already doing great job!

Summary:

brew install [email protected]

which openssl

should be
/opt/homebrew/opt/[email protected]/bin/openssl

run

CFLAGS="-Wno-error=implicit-function-declaration" rbenv install [version you want to install]