LXC - LXC vs Docker

LXC allows the creation and running of multiple isolated Linux virtual environments on a single control host.

It allows you to not only isolate applications, but even the entire OS.
As there is no preloaded emulation manager software, it runs with no added overhead; i.e. faster and with less RAM.
There is no hardware emulation, which means that aside from a small memory software penalty, LXC will boast bare metal performance characteristics because it only packages the needed applications.

A Docker container does not include a separate operating system; instead it relies on the operating system’s own functionality as provided by the underlying infrastructure.

Docker packages the application and all its dependencies in a virtual container that can run on any Linux server.
Packages the entire OS and machine setup, including hard drive, virtual processors and network interfaces.
- CON: The resulting bloated mass usually takes a long time to boot and consumes a lot of CPU and RAM.
- PRO: It can be transferred and quickly installed onto another host.

	LXC	Docker
Architecture	Supports a fully-virtualized Linux OS including boot-up procedures.	Single image running as an application.
Purposes	Run multiple applications in a single Linux VM.	Run a single application within a single container.
Requirements	Requires a fully-functional Linux OS.	Running isolated containers simultaneously.
Advantages	A lightweight alternative to virtual machines.	Rapid and easy deployment.
	More flexible.	Application-centric, portable deployment across machines.
	Data can be saved in a container.	Component re-use.
		Versioning: Docker includes git-like capabilities for tracking successive versions of a container, inspecting the diff between versions, committing new versions, rolling back etc.
		Component reuse: Docker allows building or stacking of already created packages. This allows re-use of a 'template' image, for creating other containers.
		Shared libraries: There is already a public registry (http://index.docker.io/ ) where there are many thousands of containers that can be used; which have been created by other people. WARNING: These are not all secure; with many trojans!