workspace/.vscode/tasks.json

{
  "version": "2.0.0",
  "tasks": [
    {
      "label": "Inno Setup: Compile Script",
      "type": "process",
      "command": "ISCC.exe",
      "args": [
        "setup.iss"
      ],
      "presentation": {
        "reveal": "always",
        "echo": false
      },
      "group": {
        "kind": "build",
        "isDefault": true
      }
    }
  ]
}