Thinking like containers

1

Docker Hub

The run command takes a pre-defined container image somewhere and starts a container following the rules described from that very image. Where did the ruby:2.7 image come from? Docker Hub. Think of it like a Github for Docker images.

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2

GitHub Package Registry

There are more Container registries but Docker Hub, such as Github Registry, Amazon ECR, to name a few. We can change the registry anytime by using the command docker login.

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3

Amazon ECR

There are more Container registries but Docker Hub, such as Github Registry, Amazon ECR, to name a few. We can change the registry anytime by using the command docker login.

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