Containerization is amazingly great for scientific computing. I don’t ever want to go back to doing the make && make install dance and praying I’ve got my dependency ducks in a row.
Consider people using a containerised NgINX webserver as a reverse proxy - it's so much easier to keep it up to date compared to using a distribution's version of NgINX.
I only found that it can use qemu to build or run images for a different cpu architecture that your computer.
Why would it use qemu ? Docker is not doing virtualization but containerization