What is the difference between running a project with yarn start and docker?

Question

React

I have access to the project, I can run it with yarn start or I use docker docker run -p 3000 , what are the fundamental differences in this? why would docker be needed at all when running a project locally?

Answer 1

Docker will run in a container, and yarn without it (although not a fact - it will write from what is written in package.json)
Docker is useful when the developer's environment is different from the production environment