Debugging the two project in the same solution in one time - debugging

Question

I'm using only the Visual Studio Code. From CLI I created a solution with 2 projects.
Api
Acceptane tests
Debugging it separately work perfect, but in case when I want to debug a test and an endpoint in the same time - doesn't work.
launch.json file
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": ".NET Core Launch (API)",
"type": "coreclr",
"request": "launch",
"preLaunchTask": "build",
"program": "${workspaceFolder}/ContentDownloader.API/bin/Debug/net6.0/ContentDownloader.API.dll",
"args": [],
"cwd": "${workspaceFolder}/ContentDownloader.API",
"stopAtEntry": false,
"requireExactSource": false,
"serverReadyAction": {
"action": "openExternally",
"pattern": "\\bNow listening on:\\s+(https?://\\S+)"
},
"env": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
{
"name": ".NET Core Attach",
"type": "coreclr",
"request": "attach"
}
]
}
I try do it like:
dotnet run at solution/API/ here
via a Debug Test button I run debugger for particular test (this is an acceptance test, it request to the api and check the results)
at output I have:
...\dotnet\sdk\6.0.100\Microsoft.Common.CurrentVersion.targets(5100,5): warning MSB3026: can't copy "SomeSolution\API\obj\Debug\net6.0\apphost.exe" do "bin\Debug\net6.0\API.exe". The process cannot access the file '...\SomeSolution\API\bin\Debug\net6.0\API.exe' because it is being used by another process. [...\SomeSolution\API\API.csproj]
...because it is being used by another process.
I understand what it means :) but I have no idea or found a way to solve my problem,
I tried to write my own task / launch.json, but all without success
Please advise