Docker introduction and container installation (1)

1. Introduction to Docker container

1.1 What is Docker

• Use the most open source container engine
• A Virtualization Technology of Operating System
• Depends on Linux kernel features: Namespace (Isolation) and Cgroups (Resource restrictions)
• A simple application packaging tool

1.2 Docker design goals

• Provide simple application packaging tools
• Logical separation of responsibilities between developers and operation and maintenance personnel
• Maintain consistency across multiple environments

1.3 Docker and vms

-Hypervisor: The middle software layer running on the physical device and between the systems, mainly simulating multiple operating systems sharing a physical device

• Bins/Libs are binary files and libraries
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