README.md: document git clone mkosi + pipx install#120

Merged

stellarhopper merged 2 commits intopmem:mainfrom marc-hb:pipx

Feb 28, 2025

Commits on Feb 28, 2025

run_qemu.sh: make $mkosi_bin configurable with an environment variable
marc-hb
committed
README.md: show how to run mkosi from source with pipx
marc-hb
committed