Infrastructure & Deployment
Docker
How containers actually isolate processes — cgroups, namespaces, and UnionFS layers, not just 'it's lighter than a VM'.
3 modules~12 hours totalBeginner–Advanced
Beginner Modules(0/3)
#1
Containers vs. VMs: What the Kernel Actually Isolates
ArticleContrast hypervisor hardware emulation with Linux kernel namespace process boundaries.
12 min+10 XP
#2
Images, layers, and the Dockerfile instruction order that matters
ArticleHow UnionFS stores image diffs and why ordering copy steps determines build cache efficiency.
14 min+10 XP
#3
docker run, build, exec — the three commands you'll use daily
Q&A ChallengeHands-on execution pattern for building image tags, detaching processes, and inspecting container state.
20 min+15 XP
Intermediate Modules(0/0)
Advanced Modules(0/0)
Related Glossary Terms
Reference definitions and architectural cheat sheets related to Docker:
OCI Image SpeccgroupsUnionFS
Up Next in Learning Paths
Kubernetes
Declarative cluster state: how the control plane reconciles desired vs. actual, across pods, deployments, and services.
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Docker: BeginnerLocked