Docker

Images, containers, volumes, networks, Docker Compose, multi-stage builds, and best practices for containerising applications for production.

BeginnerTopics 1–10

·What is Docker?
·Install & First Container
·Images vs Containers
·Dockerfile Basics
·Building Images
·Running Containers
·Container Lifecycle
·Listing & Inspecting
·Docker Hub & Pulling
·Cleanup

Start Beginner →

IntermediateTopics 1–10

·Layered Images & Caching
·Multi-stage Builds
·Volumes & Bind Mounts
·Networks
·Docker Compose Basics
·Multi-service Compose
·Env Vars & Secrets in Compose
·Healthchecks
·Build Args vs Env
·Debugging Containers

Start Intermediate →

AdvancedTopics 1–10

·Image Optimisation
·BuildKit & buildx
·Multi-arch Builds
·Custom Networks & DNS
·Self-hosted Registry
·Image Signing (cosign)
·Security Scanning
·Non-root Users
·Capabilities & seccomp
·Container Runtimes

Start Advanced →

ProductionTopics 1–10

·Image Pinning & SBOM
·Log Drivers
·Resource Limits
·Restart Policies
·Healthchecks for Orchestrators
·Secrets Management
·Blue/Green & Rolling Deploys
·Observability
·Security Hardening Checklist
·PID 1 & Signal Gotchas

Start Production →