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Orchestrating Docker by Shrikrishna Holla

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Verifying Installation

To verify that your installation is successful, run the following command in your terminal console:

$ docker run -i -t ubuntu echo Hello World!

The docker run command starts a container with the ubuntu base image. Since this is the first time you are starting an ubuntu container, the output of the container will be something like this:

Unable to find image 'ubuntu' locally
Pulling repository ubuntu
e54ca5efa2e9: Download complete
511136ea3c5a: Download complete
d7ac5e4f1812: Download complete
2f4b4d6a4a06: Download complete
83ff768040a0: Download complete
6c37f792ddac: Download complete

Hello World!

When you issue the docker run ubuntu command, Docker looks for the ubuntu image locally, and it's not found, it will download ...

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