SWPROT-8953: Docs add Quickstart instructions

Signed-off-by: Philippe Coval <philippe.coval@silabs.com>

Author: rzr

README.md

@@ -22,6 +22,14 @@ Or relevant sources pages, to get started head to:
 
 ## Quickstart
 
+The fastest (less than 20min) way to build z-wave-protocol-controller from scratch
+is to delagate all tasks to docker.
+
+This oneliner will do download, setup, build, test... latest release (or #main).
+
+```sh
+docker build https://github.com/SiliconLabsSoftware/z-wave-protocol-controller.git#vers_1.7.0
+```
 
 ## Contributing