[nickjj]

> Terrible performance. One of my engineers recently thought that 150ms was terrific for a HTTP request. Break out of the container and it was <10ms. YMMV.

It's not that bad for everyone.

For example on my Windows dev box, I have HTTP endpoints in volume mounted Flask and Phoenix applications that respond in microsends (ie. less than 1 millisecond). This is on 6 year old hardware and the source code isn't even mounted from an SSD (although Docker Desktop is installed on an SSD).

On Linux, I have not noticed any runtime differences in speed, except that starting a container with Docker takes quite a bit longer than starting the same process without Docker. Apparently there's a regression: https://github.com/moby/moby/issues/38077