Updated Compile from source in Linux (markdown)

Compile-from-source-in-Linux.md

@@ -2,6 +2,8 @@
 
 Compiling from source can be done by building a Docker image with the [SDRangel in Docker project](https://github.com/f4exb/sdrangel-docker) more specifically the [SDRangel section](https://github.com/f4exb/sdrangel-docker/tree/master/sdrangel). Note that you may also execute the instructions in the Dockerfile manually although building with Docker will do the same automatically.
 
+If you choose to compile from source it is assumed that the machine on which you compile is also the machine on which you run SDRangel.
+
 <h2>Instructions for manual build</h2>
 
 Compiling from source is assumed to be done in a Linux system with an Ubuntu 20.10 distribution. 20.10 is preferred over the 20.04 LTS because it solves 2 nasty bugs: