volumes-backup-extension/metadata.json

{
  "icon": "docker.svg",
  "vm": {
    "composefile": "docker-compose.yaml",
    "exposes": {
      "socket": "extension-vackup.sock"
    }
  },
  "ui": {
    "dashboard-tab": {
      "title": "Vackup",
      "src": "index.html",
      "root": "ui",
      "backend": {
        "socket": "extension-vackup.sock"
      }
    }
  }
}