Dev MaxxingAdvancedInfrastructure and Deployment75 sec

Container

A container packages an application together with everything it needs to run, so it behaves the same way regardless of the machine it's deployed on.

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What matters

Because the packaged environment travels with the application, a container helps avoid the classic 'it worked on my machine' problem caused by differing installed dependencies.

Example

A container might bundle an application's code along with the exact version of its runtime and libraries, so it runs identically on a developer's laptop and a production server.

Common misconception

A container is not the same as a full virtual machine; it shares the host machine's operating system kernel rather than running an entirely separate operating system.

Recall question

What classic deployment problem does packaging an app in a container help avoid?

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