Update build instructions.

Documentation/build.md

@@ -1,8 +1,8 @@
 # Windows
 
-Avalonia requires at least Visual Studio 2022 and dotnet 6 SDK 6.0.100 to build on all platforms.
+Avalonia requires at least Visual Studio 2022 and dotnet 7-rc2 SDK 7.0.100-rc.2 to build on all platforms.
 
-###  Clone the Avalonia repository
+##  Clone the Avalonia repository
 
 ```
 git clone https://github.com/AvaloniaUI/Avalonia.git
@@ -10,15 +10,30 @@ cd Avalonia
 git submodule update --init
 ```
 
-### Install the required version of the .NET Core SDK
+## Install the required version of the .NET Core SDK
 
 Go to https://dotnet.microsoft.com/download/visual-studio-sdks and install the latest version of the .NET Core SDK compatible with Avalonia UI. Make sure to download the SDK (not just the "runtime") package. The version compatible is indicated within the [global.json](https://github.com/AvaloniaUI/Avalonia/blob/master/global.json) file. Note that Avalonia UI does not always use the latest version and is hardcoded to use the last version known to be compatible (SDK releases may break the builds from time-to-time).
 
-###  Open in Visual Studio
+##  Build and Run Avalonia
 
-Open the `Avalonia.sln` solution in Visual Studio 2022 or newer. The free Visual Studio Community edition works fine. Build and run the `Samples\ControlCatalog.Desktop` or `ControlCatalog.NetCore` project to see the sample application.
+```
+cd samples\ControlCatalog.NetCore
+dotnet restore
+dotnet run
+```
+
+##  Opening in Visual Studio
 
-### Troubleshooting
+If you want to open Avalonia in Visual Studio you have two options:
+
+- Avalonia.sln: This contains the whole of Avalonia in including desktop, mobile and web. You must have a number of dotnet workloads installed in order to build everything in this solution
+- Avalonia.Desktop.slnf: This solution filter opens only the parts of Avalonia required to run on desktop. This requires no extra workloads to be installed.
+
+Avalonia requires Visual Studio 2022 or newer. The free Visual Studio Community edition works fine.
+
+Build and run `ControlCatalog.NetCore` project to see the sample application.
+
+### Visual Studio Troubleshooting
 
  * **Error CS0006: Avalonia.DesktopRuntime.dll could not be found**
 
@@ -35,16 +50,15 @@ It's *not* possible to build the *whole* project on Linux/macOS. You can only bu
 
 MonoDevelop, Xamarin Studio and Visual Studio for Mac aren't capable of properly opening our solution. You can use Rider (at least 2017.2 EAP) or VSCode instead. They will fail to load most of platform specific projects, but you don't need them to run on .NET Core.
 
-###  Install the latest version of the .NET Core SDK
+##  Install the latest version of the .NET Core SDK
 
 Go to https://www.microsoft.com/net/core and follow the instructions for your OS. Make sure to download the SDK (not just the "runtime") package.
 
-###  Additional requirements for macOS
+##  Additional requirements for macOS
 
 The build process needs [Xcode](https://developer.apple.com/xcode/) to build the native library.  Following the install instructions at the [Xcode](https://developer.apple.com/xcode/) website to properly install.
 
-
-###  Clone the Avalonia repository
+##  Clone the Avalonia repository
 
 ```
 git clone https://github.com/AvaloniaUI/Avalonia.git
@@ -52,7 +66,7 @@ cd Avalonia
 git submodule update --init --recursive
 ```
 
-### Build native libraries (macOS only)
+## Build native libraries (macOS only)
 
 On macOS it is necessary to build and manually install the respective native libraries using [Xcode](https://developer.apple.com/xcode/). Execute the build script in the root project with the `CompileNative` task. It will build the headers, build the libraries, and place them in the appropriate place to allow .NET to find them at compilation and run time.
 
@@ -60,7 +74,7 @@ On macOS it is necessary to build and manually install the respective native lib
 ./build.sh CompileNative
 ```
 
-###  Build and Run Avalonia
+##  Build and Run Avalonia
 
 ```
 cd samples/ControlCatalog.NetCore