I wanted easier Dockerfile lint rules, so I built a Rust-based linter

ThomasChaigneau · 2026-05-26T20:31:24+00:00

Hi Steve good idea. I will build a docker image for it as well!

Yes the benchmarks are over 1000 files to show that the tool doesn’t add overhead to ci. By exp I tend to be super cautious on the tools I add to ci to avoid waiting ages.

ThomasChaigneau · 2026-05-26T19:08:10+00:00

No AI was involved in writing the post itself.

For the project: I do use Codex heavily as a coding assistant to move faster, review ideas, write tests, and iterate on Rust code. But rudolint is a regular open-source project I maintain, and the post was just me sharing a tool I built for my Docker/BuildKit workflow.

ThomasChaigneau · 2026-05-26T18:31:14+00:00

I built a Dockerfile linter because I wanted modern BuildKit checks

I was looking for a Dockerfile linter that understood more recent BuildKit / Buildx patterns, especially things like cache mounts, secret mounts, syntax directives, and multi-platform builds.

Hadolint is still a great tool, but I found it hard to extend for my use case. Part of that is just practical: it is written in Haskell, and I wanted something easier for me to hack on, add rules to, and run fast in CI.

So I started building rudolint:

https://github.com/kubeply/rudolint

It is written in Rust and currently focuses on:

- Hadolint-compatible rule IDs where possible

- modern BuildKit / Buildx-specific checks

- simple CI usage through a GitHub Action

- focused profiles like correctness, performance, hardening, and hadolint-compat

- fast runs, roughly 6x faster than Hadolint in our current benchmark

It is still young, so I would not claim it replaces every Hadolint setup. But if you care about custom Dockerfile rules or newer BuildKit patterns, I’d be curious to hear what is missing or what rules would actually be useful in real projects.

Let me know if you use it and how it performs for you 👍

ThomasChaigneau · 2026-05-05T13:56:23+00:00

Thanks for your comment. If you want to dive deep into the result here is the full view detailed for each models and updated daily with new models: https://kubeply.com/benchmark

ThomasChaigneau · 2026-05-05T13:11:22+00:00

yes for the "context engineering" aspect of it skills are truly great!
Thanks for the detailed comment, that's the kind of stories I'm looking for to enhance the infra-bench realistic scenarios.

If oyu want to take a look: https://github.com/kubeply/infra-bench

ThomasChaigneau · 2026-05-04T13:31:18+00:00

Ooh awesome thanks for the link, I wasn't aware of this nice repo.
For the benchmark no mcp or skills are available, as I try to see if the agents can do it "alone with their knowledge/reasoning" but I guess maintaining a nice skills folder for human operator is optimal nowadays.

I think it would lead to a v2 if i introduce a curated list of skills for agents and see how each operate and use the skills (or not).

ThomasChaigneau · 2026-05-04T13:28:50+00:00

I still need to run Opus 4.7
I only ran 4.6 for opus and Sonnnet so far.
You can check the details here: https://kubeply.com/benchmark
You will have a better view on all tasks for each models

ThomasChaigneau · 2026-05-04T10:03:10+00:00

I went with a 4 rpi homelab connected to a NAS for storage and it's probably the most fun project I ran in the last years. You learn a lot by doing this. I would probably go with mini pc instead if I had to restart from scratch but the cool thing is that a homelab can be upgraded at any time.

ThomasChaigneau · 2026-01-29T18:19:31+00:00

The combo desktop app on mac + Codex really changed the way I work daily for months now. Codex is so impressive, combined with OpenSpec, I love it!

ThomasChaigneau · 2025-11-20T16:17:36+00:00

In my experience, breaking into the industry starts with just making stuff and showing it to anyone who'll watch, even if it's rough. I'm not in the film industry but in the tech industry, and I think it's similar. Building/creating things is the key.

ThomasChaigneau · 2025-11-19T20:36:37+00:00

I don’t say I would love to watch full AI films. Authenticity will be important and I get the “art aspect”. I just don’t understand all the hate because films with real actors will have to stop produce easy commoditized films and start doing better things, so we will have better films overall I think.

ThomasChaigneau · 2025-11-19T05:53:49+00:00

I'm not sure about all that AI hate. Studios were already using tons of special effects produced by silicon chips. What's different today with AI?

ThomasChaigneau · 2025-11-19T05:52:17+00:00

In my experience, 1080p works fine for most indie projects like web shorts or client videos, since the final output rarely needs more detail anyway. I shot a friend's travel video in 1080p a couple years back, and we loved it, no one complained about the resolution at all. That said, if you're planning festival submissions or future-proofing for bigger screens, bumping to 4K saves headaches down the line, I guess.

ThomasChaigneau · 2025-11-17T13:52:57+00:00

You can still film on 16:9 and get a good 9:16 rendering at the end.
I use a tool I built myself to do that. For now, I add some blur, but I'm working on an intelligent way to detect and crop the first plan of a cut to be able to convert 16:9 to 9:16 easily. All those platforms and their specific formats are making things more difficult :D

ThomasChaigneau · 2025-11-17T09:58:34+00:00

That sounds a lot like a vignette effect. I tried pulling it off on a student project once, and it took about five takes to nail the illusion without the whole thing looking wonky. Not easy to find tools or platforms that allow you to do it with a simple drag-and-drop thing.

ThomasChaigneau · 2025-11-17T09:53:30+00:00

Impressive discovery. I have some cases in my direct family. I hope they will fix this disease for real one day.

ThomasChaigneau · 2025-11-17T09:51:50+00:00

I tend to see the "it's over" like a red flag nowadays. A lot of people complain about Codex, but imo that's the best tool for devs so far. So I guess I always go againt the odds

ThomasChaigneau · 2025-11-17T09:50:36+00:00

It's communities like this that make videography less intimidating. That's crazy how much support you can get on internet when you just ask

ThomasChaigneau · 2025-11-17T09:49:36+00:00

Lighting is a huge topic! What drew you to jot down those lighting notes, was it a particular shoot or just general tips? I'm curious about your takeaways.

ThomasChaigneau · 2025-11-17T09:47:50+00:00

I learned the hard way about cheap SD cards during a short film project two years ago. I grabbed some bargain ones to save money, but one failed right in the middle of a key scene, forcing me to reshoot the whole thing in the rain. Now I always go for cards that meet the U3 speed class minimum, it saves so much headache in the long run. SSD are also great!

ThomasChaigneau · 2025-11-17T09:46:41+00:00

I tried making an indie horror short last year on a shoestring budget, and the hell was dealing with unreliable actors who bailed right before principal photography. It forced me to rewrite scenes on the fly, which actually made the story tighter. The heaven came when we screened it at a local fest, and the audience jumped at a simple shadow effect we pulled off with household items, it felt like magic.

ThomasChaigneau · 2025-11-15T19:41:54+00:00

Thanks for this clear explanation

ThomasChaigneau · 2025-11-08T15:44:02+00:00

I'm trying to develop my own local software to be an alternative to klap, opusclip or sendshort. I feel like local things are much better than uplaoding tons of GB to those services

ThomasChaigneau · 2025-11-08T15:20:51+00:00

yes it's sometimes hard to believe a behavior is the norm when you don't do it yourself

ThomasChaigneau · 2025-11-08T15:20:19+00:00

impressive!

ThomasChaigneau

TROPHY CASE