Docker is an open source containerization toolkit which enables developers to package applications into containers.

As the name suggests, Docker

Think like a Virtual Machine but:

• light weight
• great resource efficiency
• improved developer productivity

Where containers differ from

Containers don’t come with the weight of a full OS image and a hypervisor.

Containers include only OS processes and dependencies necessary to execute the code inside them.

Docker enhances the native Linux containerization technologies which enables:

• seamless portability: can run natively across any desktop, data center or cloud development...

DockerFile - every container has one and states the instructions for building the container’s image. It consists in command-line instructions;

Docker images ...

On the same host:

• Docker Compose - creates a .yaml which specifies the used containers; can deploy and run containers from a single command; can define persiste...