Advanced Docker Training Corporate Container Technologies Program

We start by grounding you in the kernel mechanisms Docker is built on and the OCI standard. From Linux-level isolation with namespaces and cgroups to the Union File System (OverlayFS) logic that merges image layers, from the resource-consumption gap between hardware virtualization and OS-level isolation to the Docker Engine/containerd runtime architecture and the environment reproducibility that solves the “works on my machine” problem for good — we lay the theoretical foundation. From there you move into the Docker CLI: Client-Daemon communication, interactive (-it) and detached (-d) run modes, container lifecycle commands (run, start, stop, rm) and SIGTERM behavior, plus logging and debugging practice with docker logs, docker exec, and docker inspect.

You learn to produce your own production-quality image. From the ENTRYPOINT vs. CMD distinction to build cache and layer optimization, from .dockerignore usage to running images as non-root (the USER directive) and health-checking containers with HEALTHCHECK, we go through the Dockerfile in depth. After separating the build environment from the runtime environment with multi-stage builds, you set up networking end to end — port binding, custom networks, and container-internal DNS — along with data persistence via named volumes and bind mounts, and how to back up and restore volumes safely.

We close the program with the practices your team will use in day-to-day operations. From configuration management with ENV and --env-file to testing CPU/RAM resource limits with docker stats, from listing local images with docker images to searching Docker Hub with docker search, from registry authentication with docker login to pushing, pulling, and tagging images on Docker Hub, you apply production operations. After learning to manage multi-container applications declaratively (IaC) with Docker Compose, you discover Portainer, an open-source web UI for managing containers visually.