Debugging in .NET devfile does not work

[amisevsk]

Describe the bug

It does not appear to be possible to debug the sample hello world app included with the devfile in the .NET devfile.

Attempting to add configuration

{
  "type": "netcoredbg",
  "request": "launch",
  "program": "${workspaceFolder}/bin/Debug/netcoreapp2.0/web.dll",
  "args": [],
  "name": ".NET Core Launch (console)",
  "stopAtEntry": false,
  "console": "internalConsole"
}

as suggested gives the error:

Exception thrown: 'Microsoft.DotNet.Cli.Utils.CommandUnknownException' in Microsoft.DotNet.Cli.Utils.dll
No executable found matching command "dotnet-/projects/bin/Debug/netcoreapp2.0/web.dll"

It appears that something is prefixing dotnet- to the executable; even with an absolute path for "program", the error

Exception thrown: 'Microsoft.DotNet.Cli.Utils.CommandUnknownException' in Microsoft.DotNet.Cli.Utils.dll
No executable found matching command "dotnet-/projects/dotnet-web-simple/bin/Debug/netcoreapp2.0/web.dll"

is logged.

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

1. Start .NET core workspace from devfile
2. (unsure if necessary) Do workaround suggested in Theia Omnisharp Plugin doesn't detect new projects  #13739 (run "update dependencies task" and restart workspace or omnisharp container)
3. Add debug config suggested above (or use intellisense to auto-generate it
4. Attempt to run debug config.

Expected behavior

Theia launches app and starts debugging

Runtime

• kubernetes (include output of kubectl version)
• Openshift (include output of oc version)
• minikube (include output of minikube version and kubectl version)
• minishift (include output of minishift version and oc version)
• docker-desktop + K8S (include output of docker version and kubectl version)
• other: (please specify)

Screenshots

Installation method

• chectl
• che-operator
• minishift-addon
• I don't know

Environment

• my computer
  • Windows
  • Linux
  • macOS
• Cloud
  • Amazon
  • Azure
  • GCE
  • other (please specify)
    • OpenShift dev cluster
• other: please specify

Additional context

[slemeur]

@tolusha : Can you please check this issue

[slemeur]

As fixes are ready. I'm labelling this in 7.0