Deleting the/var/lib/dockerdirectory will not upgrade Docker Engine CE to Docker Engine EE. It will only remove all the data stored by Docker, such as images, containers, volumes, and networks. This can cause data loss and disrupt the running services. To upgrade from Docker Engine CE to Docker Engine EE, you need to follow the official instructions from Docker, which involve uninstalling the CE package and installing the EE package. You also need to have a valid license to use Docker Engine EE.Reference:

Upgrading Docker CE to EE for the Impatient --- Part I

Install Docker Engine

Moving from docker ce to docker-EE - Stack Overflow