RE: Where to find an image of the new Dynamics 365 BC Wave Release?
Thank you for your answer.
But I did it like we had to do it in the past.
I downloaded the image from docker:
docker pull mcr.microsoft.com/businesscentral/sandbox:ltsc2019
Then I found a script from Microsoft on its offical site:

Then I adjusted the downloaded file and run it:

So you see it was successful.
Now I have opened a new project in Visual Studio Code and gave in the new information to connect to my container (launch.json):

I think everything should be right...
And the app.json looks like this:

Here I get an error message:
"A package with publisher 'Microsoft', name 'Application', and a version compatible with '13.0.0.0' could not be found in the package cache folder "
I read that I have to delete the application statement. The error message has gone.
But when I try to download the symbols I get another error message:
The request for path /BC/dev/packages?publisher=Microsoft&appName=Application&versionText=13.0.0.0 failed with code Unauthorized.