(Note: This does not apply to you if you use the SaaS version of OT-BASE Asset Center)
Docker is a popular container platform that is used by OT-BASE Asset Discovery. You can learn more about Docker here. In order to install OT-BASE Asset Discovery, you must already have Docker installed and running. Installing Docker requires a Linux host environment.
OT-BASE Asset Discovery uses Docker because it makes deployment much easier since you have to mess less with version conflicts etc. Compared to a full Virtual Machine, the Docker container is much more efficient because it saves you to always install a full deployment environment when installing updates.