A container a virtualization instance in which the kernel of an operating system allows for multiple isolated user-space instances. Unlike virtual machines (VMs), containers do not need to run a full-blown operating system (OS) image for each instance. Instead, containers are able to run separate instances of an application within a single shared OS.
A container is any receptacle or enclosure for holding a product used in storage, packaging, and transportation, including shipping. Things kept inside of a container are protected by being inside of its structure. The term is most frequently applied to devices made from materials that are durable and are usually at least partly rigid.
A container can also be considered as a basic tool, consisting of any device creating a partially or fully enclosed space that can be used to contain, store, and transport objects or materials.
