How do you deploy a cloud function?

There is currently no way to deploy a single function with the Firebase CLI. Running `firebase deploy` will deploy all functions.

Get started: write, test, and deploy your first functions

Run functions locally

Deployment. Deployments work by uploading an archive containing your function’s source code to a Cloud Storage bucket . Once the source code has been uploaded, Cloud Build automatically builds your code into a container image and pushes that image to either Artifact Registry or Container Registry.