Use the publish command to publish a Dapp to the solUI cloud:
solui publish --spec /path/to/json --artifacts /path/to/contract/artifacts
If you are not yet authenticated with the solUI backend then the login process will first be performed.
Once authentication is complete re-run the publish command to upload the spec and artifacts to the backend. The backend will check the spec id to see if it already exists in the repository under your user id. If the spec id doesn't yet exist in the repository it will be created. Otherwise, it will be published and a link to viewing your published Dapp will be displayed in the console.