Update README.md

[wispoz]

What was changed

migrate to v2 docker compose
instead of docker-compose now its docker compose

Why?

because docker-compose is deprecated

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}