Docker in 2026: What Changed (And What You’re Still Doing Wrong)

Sponsored by Depot CI Try it here → https://depot.plug.dev/Mxr2bf4 Speed up your Docker builds with persistent caching and warm infrastructure This is not another Docker commands tutorial. This is the mental model you actually need to understand how Docker works, why builds get slow, why containers become insecure, and why things break in production even when everything looks “running”. In this video, you’ll learn: • How Docker really works under the hood • The difference between images, containers, and registries • The 3 most common mistakes developers make in Dockerfiles • How to fix slow builds using layer caching • Why running containers as root is dangerous • How to design health checks that actually reflect real system health • What changed in Docker in 2026 • How Docker is now being used for AI infrastructure and MCP servers If you're building production systems, preparing for system design interviews, or working with modern AI stacks, these concepts are essential. 📚 Related Resources: → ByteMonk Blog: https://blog.bytemonk.io/ → System Design Course: https://academy.bytemonk.io/courses → LinkedIn: https://www.linkedin.com/in/bytemonk/ → Github: https://github.com/bytemonk-academy ⏱️ Timestamps 00:00 Docker in 2026 00:44 The “Works on My Machine” Problem 02:00 Containers vs Virtual Machines 02:34 Docker Basics: Image, Container, Registry 04:14 Mistake #1: Docker Layer Order (Build Speed Fix) 06:10 Mistake #2: Running Containers as Root (Security Risk) 07:10 Mistake #3: Misleading Health Checks 07:53 Sponsor: Faster Docker Builds with Depot CI 09:24 Docker in 2026: MCP Servers & AI Containers 10:29 Running AI Models with Docker Compose 11:06 Supply Chain Security: Pin Your Base Image https://www.youtube.com/playlist?list=PLJq-63ZRPdBt423WbyAD1YZO0Ljo1pzvY https://www.youtube.com/playlist?list=PLJq-63ZRPdBssWTtcUlbngD_O5HaxXu6k https://www.youtube.com/playlist?list=PLJq-63ZRPdBu38EjXRXzyPat3sYMHbIWU https://www.youtube.com/playlist?list=PLJq-63ZRPdBuo5