Thursday, February 13, 2025

Why you need to use Docker and OCI containers



A e-book printed in 1981, known as Nailing Jelly to a Tree, describes software program as “nebulous and troublesome to get a agency grip on.” That was true in 1981, and it’s no much less true 4 a long time later. Software program, whether or not it’s an software you acquire or one that you just constructed your self, stays exhausting to deploy, exhausting to handle, and exhausting to run.

Docker containers, and the OCI commonplace for containers and their runtimes, present a method to get a grip on software program. You need to use containers to package deal an software in such a approach that its deployment and runtime points—the right way to expose it on a community, the right way to handle its use of storage and reminiscence and I/O, the right way to management entry permissions—are dealt with exterior of the appliance itself, and in a approach that’s constant throughout all “containerized” apps. You may run your container on any Linux- or Home windows-compatible host that has a container runtime put in.

Containers supply many different advantages past encapsulation, isolation, portability, and management. Containers are small in comparison with digital machines, measurable in megabytes versus gigabytes. They begin immediately. They’ve their very own built-in mechanisms for versioning and part reuse. They are often simply shared by way of directories like the general public Docker Hub or a non-public repository.

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