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Welcome back, tech enthusiasts! 🚀

This week’s edition brings exciting updates on GitHub tools, AI trends, and some fun reads on tech quirks. From improving your Copilot Workspace experience to securing your CI/CD pipelines with ARM-based runners, there’s a lot to explore.

Here’s what’s in store:

• 🛠️ How GitHub built the Skyline CLI extension using GitHub itself

• 🚀 Linux ARM64 hosted runners now free for public repositories

• 📂 New Copilot Workspace updates for better navigation and file management

• 🔍 Using Copilot to document and understand legacy codebases

• 🔧 Building resilient systems and exploring Rust for C# developers

From improving your workflow to exploring AI advancements and discovering unique tech stories, there’s plenty to dive into this week. Let’s jump right in!

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GitHub Digest

Couple of editions ago, I shared the GitHub Skyline extension. You can install it on the GH cli and use it to generate an overview of your contributions.

Of course, this extension is not only made by GitHub, but also using GitHub. The below article tells how they used Codespaces as a dev environment, Copilot chat to rubber duck, Copilot Edit to make changes to multiple files and Actions to build, test and release the extension. Security and secret management are also part of the mix.

ARM CPUs are becoming more and more interesting to use as they are efficient and fast. The Linux arm64 hosted runners can now be used for free when you have a public repository. Just use ubuntu-24.04-arm as the runner name.

Remember that Copilot Workspaces is now available for all paying Copilot users? Already some nice improvements are released to make working with this feature even better.

We all know this problem; you need to work on some old legacy project and there is no documentation to be found. Would it not be nice to how somebody to tell you what the code is suppose to do?

Maybe that somebody is actually Copilot and the tips and tricks shared in the next article can help you better understand legacy codebases or languages.

Coding Corner

As you might have guessed, AI is not going away for sure. Certainly not at Microsoft, where a reorg is happening at the AI division to get even more focus on AI development.

Why would you want to run Doom, a classic shooter, on a pregnancy test? Somehow people want to run this game on all kinds of systems, for as long as this has been possible. Discover what makes this game unique so it needs to run on anything that has some sort of interface.

Building resilient systems is hard as there are so many things that can fail. Derek shares some of the patterns you can use to protect your system against outages of third party systems.

.NET Nook

I heard some good things about Rust, as it was much safer and more performant compared to C#, but never really looked into it. Maybe this series of articles by Chris Woodruff can help comparing C# to Rust and explain the attention it gets.

Building AI solutions becomes easier with the Microsoft.Extensions.AI framework. The article by Milan Jovanovic has some samples of text summarization and tag detection using a local Ollama LLM container. And yes, it is just a couple of lines to get this AI solution working.

Closing Thoughts

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