Updated Home (markdown)

Home.md

@@ -36,9 +36,11 @@ You will find `flatpak` and `snap` folders in the source tree. They have been co
 
 <h2>Continuous Integration and Delivery</h2>
 
-At present this is done using [Appveyor](https://www.appveyor.com/) and is driven by the [.appveyor.yml](https://github.com/f4exb/sdrangel/blob/master/.appveyor.yml) file. The build is run at Appveyor premises on virtual machines which profile may be found here:
+At present this is done using [Appveyor](https://www.appveyor.com/) and is driven by the [.appveyor.yml](https://github.com/f4exb/sdrangel/blob/master/.appveyor.yml) file. The first two builds are run at Appveyor premises on virtual machines which profile may be found here:
   - [Linux](https://www.appveyor.com/docs/linux-images-software/) Ubuntu 20.04 from v4.14.10
-  - [Windows](https://www.appveyor.com/docs/windows-images-software/) with Visual Studio 2017
+  - [Windows](https://www.appveyor.com/docs/windows-images-software/) with Visual Studio 2019
+
+A Docker image build using [this Dockerfile](https://github.com/f4exb/sdrangel-docker/blob/master/sdrangel/Dockerfile) is run at the owner premises.
 
 For every release on master branch the resulting artifacts are uploaded to the [releases section](https://github.com/f4exb/sdrangel/releases).
 
@@ -47,5 +49,6 @@ You can check [SDRangel project](https://ci.appveyor.com/project/f4exb/sdrangel)
 <h2>Repository branches</h2>
 
   - master: this hosts SDRangel version 4. It is the default branch and most stable. This is the branch used to produce release artifacts.
-  - dev: this is the development branch related to master. This can also serve as an integration branch. The continuous integration runs on this branch but artifacts stay in the CI/CD system.
+  - dev: this used to be the development branch related to master but feature branches are now preferred for development
+  - next_release: this branch may appear temporarily when a lot of feature branches need to be merged for the next release. This avoids polluting the master branch with versions that may break
   - v5: this hosts SDRangel version 5 and is the tip of development. It contains latest developments and features. New features can occasionally make their way to master. However MIMO support stays specific to this branch. No artifacts are provided on this branch you will have to compile from source or build a Docker image.