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Docker is an open source application container engine that allows developers to package their applications and dependencies into a portable container and then publish them to any popular Linux or Windows operating system machine. Virtualization can be achieved.
The operating environment of this article: ubuntu 18.04 system, Docker version 20.10.11, Dell G3 computer.
What is docker developed for?
Docker is an open source application container engine that allows developers to package their applications and dependencies into a portable container and then publish them to any popular Linux or Windows operating system machine On the other hand, virtualization can also be achieved. Containers completely use the sandbox mechanism and will not have any interfaces with each other.
A complete Docker consists of the following parts:
DockerClient client
Docker Daemon daemon process
Docker Image
DockerContainer container
Docker has two file formats, Dockerfile and Compose file . A Dockerfile defines the contents and startup behavior of a single container. Compose file defines a multi-container application.
Recommended learning: "docker video tutorial"
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