Putting the agent in a microVM usually costs you the editor and harness you work in. It does not have to. Every tool that speaks SSH attaches to a sandbox …

A Dockerfile answers everything about the inside of an image and nothing about what it is allowed to reach. For an application that was fine. For an agent it is …

The argument I gave at ContainerDays Hamburg: the thing that makes a coding agent productive is the same thing that makes it dangerous, and you do not fix that …

Three coding agents. One Java project. Sounds like a recipe for merge conflicts and midnight debugging. What actually stops that from happening? Manuel de la Peña brings biomelab, his own desktop…

The extra container in your docker ps: what Ryuk is, the labels it uses to know what is yours, the TCP protocol it speaks with your tests, the timers and race …

If you’ve used Testcontainers in any language (Go, Java, .NET, Python, Node, Rust), you’ve probably noticed an extra container hanging around in your docker ps output while your tests run. Its image i...

T3 Code is a control surface for the coding agents already installed on your machines. I put a server on four of them, kept the phone as a client, and my work …

Where the identifier that ties a test session together comes from: derived from the parent process, hashed, stamped on every resource as a label, and used to …

Using the LocalStack module in testcontainers-go to write an integration test for a real Go AWS Lambda: compiling the bootstrap zip before startup, provisioning …

How testcontainers-go models container networks: the default bridge, the network/ package, the four request-side helpers for attaching containers, aliases that …

A short look at the trail testcontainers-go leaves on Docker Hub: the two images it pulls in normal operation, the User-Agent header that makes the pulls …

65 modules in testcontainers-go, all built on the same Run we have been tracing for three posts. The standard module skeleton, the Container wrapper type, the …

The library's whole feature set, from file copy to wait strategies to log consumers, is implemented as lifecycle hooks. Two hook function types, eleven stages, …

As an OSS maintainer, I have the opportunity to speak at conferences and meetups about my work, and I’m always happy to do so. I’ve been organizing …

Every wait strategy testcontainers-go ships, how the engine wires them in as a single PostStarts lifecycle hook, and the four functional options for plugging …

How DHI (Docker Hardened Images) uses testcontainers-go and sk8s to test Helm charts in ephemeral k3s clusters: scaffolding, image loading, and one-cluster …

How testcontainers-go's API surface is shaped: the older `GenericContainer(ctx, req)` primitive that takes a request struct, the modern `Run(ctx, img, opts...)` …

I described a blog post idea on Telegram. Twenty minutes later, a pull request existed on GitHub. I never opened a terminal, never touched git, never ran a …

Four Claude Code skills I use on every pull request: one writes the description, one handles review comments, one investigates CI failures, and one watches the …

I built a personal AI assistant on my Synology NAS that parses my electricity bills, grocery receipts, bank statements, and parking tickets. It runs on …

How I use biomelab as my daily command center: kanban board, keyboard-driven worktrees, sandboxes, and never touching main. The workflow that makes me feel …

Renfe tardó años y 164 millones de euros en renovar su web. Yo construí un visor de trenes en tiempo real en un par de días dentro de un Docker Sandbox. Esta es …

A terminal dashboard for managing git worktrees and AI coding agents in parallel. Sandbox isolation, PR status, live agent detection.

A terminal dashboard for managing git worktrees and AI coding agents in parallel. Sandbox isolation, PR status, live agent detection.

A quickstart for Docker Sandboxes (sbx). Contribute to mikegcoleman/sbx-quickstart development by creating an account on GitHub.

A step-by-step guide to building a real app inside a Docker Sandbox: from sbx create to network policies, port forwarding, and shipping. Safe and practical.