Deep dives into DevOps and server-side topics, combining theory with hands-on examples. Run every command in an attached remote playground, from your browser or local terminal over SSH — no setup required.
A practical deep dive into container image internals that will help you build a clear mental model of how images are composed, identified, stored, and distributed across registries.
Container registries look simple until you need to debug what was actually pushed, why a pull picked the wrong image, or why deleting a tag didn't remove anything. Learn how registries work by pushing, pulling, inspecting, and deleting image data directly through the Registry API.
Learn how to build smaller, more secure Docker container images using Multi-Stage Builds. This guide explains common sources of image bloat, best practices for slimming down production images, and practical examples for Node.js, Go, Rust, and other application stacks. Start optimizing your containers today!
How to explore the filesystem of a container image using nothing but the standard Docker means (and without running any containers).
Choosing the right base image for your Node.js application can drastically affect its security, size, and performance. This post breaks down popular options - from slim and distroless to full-sized images - helping you navigate the trade-offs and pick the best fit for your development, build, and production needs.
While "FROM scratch" containers may seem functional, they often lack essential components that programs expect to find in their execution environment. Discover the most common pitfalls of building container images "FROM scratch" and learn how to avoid them.
What are these distroless images, really? Why are they needed? What's the difference between a container image built from a distroless base and a container image built from scratch? Let's take a deeper look.
