Is it going to be interesting to see how new Apple machines running ARM based processors plays out.
Writing code, and building docker images locally on ARM and building and running the same code on X86 in production could potentially, in some circumstances cause some issues. If not, it's a bit of a pain to potentially build and publish x86 and ARM images so that people can run them anywhere (Some projects are already doing this). Running production on ARM could work if you wanted to, but right now the instance types are very restricted in terms of different combinations of cpu/disk/io.