Core Concepts
3 sectionsRapid overview
Core Concepts
TL;DR
A Docker container is just an isolated Linux process — its own filesystem (image layers), network namespace, and cgroup-enforced resource limits — orchestrated by the Docker daemon, containerd, and runc. The skills that matter day-to-day ar…
Read →How it works
A container is an isolated process with: - Its own filesystem (image layers) - Its own network namespace - Resource limits (cgroups) - Process isolation (namespaces)
Read →Quick recall Q&A
1. Use minimal base images (alpine, distroless) 2. Multi-stage builds 3. Combine RUN commands 4. Remove unnecessary files in same layer 5. Use .dockerignore 6. Don't install dev dependencies
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