What is the purpose of the expose and publish commands in Docker

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Question - What is the purpose of the expose and publish commands in Docker?

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Expose

Expose is an instruction used in Dockerfile.
It is used to expose ports within a Docker network.
It is a documenting instruction used at the time of building an image and running a container.
Expose is the command used in Docker.
Example: Expose 8080

Publish

Publish is used in a Docker run command.
It can be used outside a Docker environment.
It is used to map a host port to a running container port.
--publish or –p is the command used in Docker.
Example: docker run –d –p 0.0.0.80:80
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