backend/projects/ui-special/scss-bundle.config.json

{
  "bundlerOptions": {
    "entryFile": "./projects/ui-special/assets/scss/_theming.scss",
    "rootDir": "./projects/ui-special/assets/scss",
    "outFile": "./dist/ui-special/_theming.scss",
    "ignoreImports": ["~@angular/.*"],
    "logLevel": "silent"
  }
}