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Docker 101: Run and Manage Containers
Go from zero to a confident Docker beginner. Learn how to run containers of all kinds, interact with them, and build a clear mental model of how Docker manages your applications behind the scenes.
Skill Paths
Ultra-focused learning series combining practical challenges, concise theory, and visual explanations. Each path helps you build or sharpen a specific skill, such as working with Linux storage, running containers, or building images.
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Docker 101: Build Container Images
Learn how to write Dockerfiles from scratch and build production-ready container images. Start with the basics of image building and progress through handling dependencies, compiling applications, inspecting image internals, and optimizing builds with multi-stage Dockerfiles. Then go deeper with advanced Dockerfile instructions, analyzing image internals, and producing multi-platform builds.
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Docker 101: Pull and Push Container Images
Learn how to move container images between your machine and container registries. Practice pulling images by tag, digest, and platform; tagging and pushing them to public and private registries; mirroring images across repositories; shipping images into air-gapped environments; and publishing multi-platform images.
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Build Container Images Like a Pro
Practice building container images, choosing the right base image, organizing multi-stage Dockerfiles, and troubleshooting common issues caused by flawed image composition.
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Copy Container Images Like a Pro
Practice copying container images from one repository to another using the docker, crane, skopeo, and regctl tools.
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Get Started with Linux Control Groups (cgroup v2)
Start by learning how to limit process resources in Linux using cgroups—from the most basic, hands-on cgroupfs manipulation to the more convenient systemd-run command. Then, explore how Docker and Kubernetes leverage cgroups to control the resource usage of containers and pods.
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Get Started with Dagger
Learn how to install Dagger and write the first modules to build, test, and deploy your application.