Read, Write, Execute.

Notes from the team on software engineering research, CI/CD, and how we're building RWX.

In July we released ARM runners, a VS Code Extension, and an option to start runs manually. Stay tuned for progress on a new way to build container images.

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NewsJul 25, 2025

The GitHub Actions Base Image is a Whopping 47 GiB

July 25, 2025

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The decision to bundle a plethora of tools into the GitHub Actions base image is baffling. The base image is a whopping 47 GiB.

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NewsJul 24, 2025

Proposal for a New Way to Build Container Images

July 24, 2025

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This is our proposal for a new approach for building container images that provides substantially faster builds with simplified configuration.

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NewsJul 23, 2025

Sandboxing is the Key to Caching without False Positives

July 23, 2025

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RWX is the only CI/CD platform that automatically caches everything. Cache keys are determined automatically, and tasks are sandboxed to prevent false positives.

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NewsJul 22, 2025