What are the main features of docker?

Docker’s design features:

Lightweight

Multiple Docker containers running on one machine can share the operating system of this machine Kernel; fast-reading startup that requires very little computing and memory resources. The image is constructed through the file system layer and shares some common files, so that disk usage can be minimized and the image can be downloaded faster;

Standard

Docker containers are based on open Standard, able to run on all mainstream Linux versions, Microsoft Windows, and any infrastructure service infrastructure including VMs, bare metal servers, and clouds;

Security

Docker gives applications isolation, not only Limited to being isolated from each other and independent of the underlying infrastructure. Docker provides the strongest isolation by default, so if there is an application problem, it is only a problem with a single container and will not affect the entire machine.

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