and it contain Astoria repo by default this will make getting packed apps easier,
WUT is designed by default to auto install, it has also tools to restart Astoria service and create storage shortcut easily.
Get WUT Mini [ Download]
After you update to build 14320 with Astoria, 
you can use
                                    these tools to
                                    convert APK to
                                    APPX or for installation:
- Astoria Package Manager (by Empyreal96)
[ Download] - Apk2Appx Converter (by fadilfadz01)
[ Download] 
More Details
By default, the basic system installer is able to install apps. 
Additionally,
                                    you can use
                                    the Device Portal to do that. 
However, tools like the Astoria
                                        Package
                                        Manager can assist
                                    in retrieving packed apps from the repository. 
It also helps you to install
                                    games along
                                    with their related data, 
which is not possible with the normal installer.
                                    To install APK apps directly from your PC, you need to use ADB (Android Debug
                                    Bridge).
                                    
However,
                                    ADB doesn't work directly with Astoria. First, you'll need to connect your phone
                                    using tool
                                    called wconnect.
                                
Get WConnect & ADB [ Download]
Setting Up WConnect Agent
- Prepare a PIN code from Settings > Update > For Developers.
 - At Device Discovery, enable the toggle.
 - Click on Pair, then use the given pin in the command below.
 - Open CMD on your PC.
 - Navigate to the wconnect folder using:
                                        
cd "Location of wconnect folder" - Connect your phone using the command: 
wconnect usb <pin> - Or via IP command: 
wconnect 198.168.0.xxx <pin> - Once your phone is connected, you can start using ADB commands.
 - ADB install command: 
adb install "Path to APK app"