Running Docker hello-world

Enter the following command into your console:

$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
...

Congratulations! You've just run your first Docker container. I hope you can already see how simple Docker is. Let's examine what happened under the hood, as follows:

1. You ran the Docker client with the run command.
2. The Docker client contacted the Docker daemon and asked to create a container from the image called hello-world.
3. The Docker daemon checked whether it contained the hello-world image locally and, since it didn't, requested the hello-world image...