Andre Hofmeister

@hovfefe
93 Followers
20 Following
193 Posts
Maintaining #testcontainers | Contributing to OSS | Automating builds, tests and infrastructures | Making devs happy | At ZEISS Group | Docker Captain
馃搷Behind a keyboard or guitar
Websitehttps://www.andrehofmeister.com
GitHubhttps://github.com/HofmeisterAn
Andre HofmeisterJun 9
Kevin WittekJun 9

We've just released sbx 0.32.0:
https://github.com/docker/sbx-releases/releases/tag/v0.32.0

Notably, that fixes running sbx on headless Linux, and also brings support for our v2 kits format (check out https://github.com/docker/sbx-kits-contrib for kits examples).

Also, much better performance when using the new `--clone` flow thanks to enabling virtiofs caching.

Release v0.32.0 路 docker/sbx-releases

Highlights Audit logging: Sandboxes now emit structured JSONL audit records for policy decisions. Records are written to a per-OS log directory and can be forwarded to any SIEM platform for enterpr...

GitHub
Andre HofmeisterJun 8

Been leaning hard on #Docker Sandboxes lately to keep secrets out of my agent environment entirely, no tokens sitting in env vars waiting to leak 馃敀.

Put together a spec.yaml workflow that auths against GHE Copilot + a private NuGet feed: https://github.com/HofmeisterAn/docker-sandbox-kit.

GitHub - HofmeisterAn/docker-sandbox-kit

Contribute to HofmeisterAn/docker-sandbox-kit development by creating an account on GitHub.

GitHub
Andre HofmeisterMay 19
#testcontainers for #dotnet 4.12.0 is out 馃惓 This release ships a major version bump of our forked Docker.DotNet client, bringing a bunch of improvements made over the past months. Fingers crossed it's all smooth sailing for you 馃: https://github.com/testcontainers/testcontainers-dotnet/releases/tag/4.12.0.
Release 4.12.0 路 testcontainers/testcontainers-dotnet

What's Changed Thanks to all contributors 馃憦. 鈿狅笍 Breaking Changes chore(deps): Bump Docker.DotNet from 3.131.1 to 4.0.2 (#1665) @HofmeisterAn 馃殌 Features feat: Add Floci module (#1690) @object fea...

GitHub
Andre HofmeisterApr 26
Along with many stability and performance improvements, the new Docker.DotNet version is now AOT-compatible. Check out the release notes from version 4.0.0 onward. They include many great updates 馃槑: https://github.com/testcontainers/Docker.DotNet/releases. #docker #dotnet
Releases 路 testcontainers/Docker.DotNet

:whale: .NET (C#) Client Library for Docker API. Contribute to testcontainers/Docker.DotNet development by creating an account on GitHub.

GitHub
Andre HofmeisterMar 25
This kind of feedback is what makes working in OSS so fun: https://github.com/testcontainers/Docker.DotNet/issues/94. We could all use a bit more recognition for each other鈥檚 work, especially these days, when the human side of things sometimes gets lost 鉂わ笍 #docker #dotnet #oss
Nice work! 路 Issue #94 路 testcontainers/Docker.DotNet

Wow lot of finished PRs since last visit. @HofmeisterAn 馃憤馃徎 ________________ < docker says: > < danke! 鉂わ笍 > < thank you! 馃檶 > ---------------- \ \ \ ## . ## ## ## == ## ## ## ## === /""""""""""""""""...

GitHub
Andre HofmeisterMar 12
The new #testcontainers for #dotnet release has arrived: https://github.com/testcontainers/testcontainers-dotnet/releases/tag/4.11.0. Version 4.11 comes with new modules, bug fixes, and improvements, plus OpenSSF Scorecard analyses for extra trustworthiness. I've also got an update ready for the Docker.DotNet client, which in the next release will bring performance improvements, better resource usage, lots of fixes, and support for .NET's native HTTP handler 馃挭.
Release 4.11.0 路 testcontainers/testcontainers-dotnet

What's Changed Thanks to all contributors. Once again, really great contributions from everyone 馃. The NuGet packages for this release have been attested for supply chain security using actions/att...

GitHub
Show threadAndre HofmeisterFeb 27
With the new design and structure, adding or extending handlers is much easier. SSH support is coming soon.
Andre HofmeisterFeb 27

I've started refactoring Docker.DotNet and introducing a more modern, reliable implementation.

Just added a clean builder API for creating Docker client instances. With help from the community, it now supports the .NET native HTTP handlern. No more mandatory legacy, slow implementation (opt-in for now): https://github.com/testcontainers/Docker.DotNet?tab=readme-ov-file#usage. #docker #dotnet

Andre HofmeisterFeb 13
I've put together a few slides for future #testcontainers for #dotnet talks. If you're interested in discussing #testcontainers, let me know. Feedback on the slides is welcome as well: https://andrehofmeister.com/en/testcontainers-for-dotnet.
Testcontainers for .NET

Andre HofmeisterDec 10, 2025

I never expected such an amazing journey when I started working on #testcontainers for #dotnet years ago. I've met many great people and learned a lot. I'm truly grateful for all of it. I never imagined the packages would one day pass 150M+ downloads!

Check out Testcontainers (https://testcontainers.com/) and test against real dependencies with confidence.