Tested working on paperspace.com
You need to create a notebook on gradient use the "From Scratch Option".
Then in the advance section for container name user "cyberes/gradient-base-py3.10:latest"
If you want to install extension you need to enable the launch command in the notebook with the "--enable-insecure-extension-access" flag.
You have to manually install the dreambooth extension on the public url that is created when you run the notebook.