Container Mastery

Four courses that climb from running your first container to namespaces and cgroups and the OCI image format. Instead of memorising commands, you narrow a cause from a single exit code, point at the one line that broke the cache, and prove with inspect what got baked into an image. By the end you can review someone else's Dockerfile in three minutes. Least-privilege images continue in the Security path.

코스

• Docker Fundamentals — A first course for people running their first container.
• Building Images — Slow builds are usually about ordering, not caching.
• Volumes, Networks and Compose — One container does not make a service.
• Container Internals — There is no such thing as a container in the kernel.