I confirm that. A customer of mine was running the full test suite of a Rails web app in 50 seconds on his M1 Mac, in a docker container. I ran it in 75 second

I confirm that. A customer of mine was running the full test suite of a Rails web app in 50 seconds on his M1 Mac, in a docker container. I ran it in 75 seconds on Linux on a 2014 laptop. 50 vs 75 could be a large improvement but not as much as one would expect from the difference of hardware: CPU, RAM, bus, everything is much faster on the M1 Mac and yet it's wasting too many resources running an x86 docker on ARM.