Docker in Production

Containers vs VMs — the mental model that sticks

Dockerfile mastery: multi-stage, caching, and non-root

Docker Compose for real apps

Volumes, bind mounts, and data persistence

Networking: bridge, overlay, and DNS discovery

Registries, image tagging, and CI/CD pipelines

Container security and image hardening

Observability: Prometheus, Grafana, and cAdvisor