[ubuntu-image] Ubuntu Actions Runner Image Analysis (2026-02-01)

[github-actions]

Ubuntu Actions Runner Image Analysis Update

This PR adds comprehensive analysis of the default Ubuntu Actions runner image for developers who need to create custom Docker images that mimic the GitHub Actions environment.

Changes

• Created: scratchpad/ubuntu-runner-analysis.md
• Analysis Date: 2026-02-01
• Source: Ubuntu 24.04 Runner Image Documentation
• Image Version: 20260126.10.1
• Ubuntu Version: 24.04.3 LTS
• Runner Version: 2.331.0

What's Included

The analysis provides:

1. Complete Software Inventory

   • Operating system details (Ubuntu 24.04.3 LTS)
   • Language runtimes (Node.js, Python, Ruby, Go, Java, PHP, Rust, .NET)
   • Container tools (Docker, containerd, Podman, Kubernetes tools)
   • Build tools (gcc, clang, CMake, Make, Maven, Gradle)
   • Databases (PostgreSQL, MySQL, MongoDB, Redis, SQLite)
   • CI/CD tools (GitHub CLI, Azure CLI, AWS CLI, Terraform)
   • Testing tools (Selenium, browser drivers, Playwright)

2. Docker Image Creation Guide

   • Base image setup
   • Language runtime installation
   • Container tools configuration
   • Complete Dockerfile examples
   • Best practices and recommendations

3. Key Differences from Runner

   • GitHub Actions context limitations
   • Pre-cached dependencies
   • File system layout differences
   • Size and update considerations

4. Usage Recommendations

   • When to use official runner vs. custom images
   • Best practices for custom image development
   • Maintenance guidelines

Why This Matters

Developers often need to:

• Create reproducible local development environments
• Build custom Docker images for self-hosted runners
• Understand what tools are available in GitHub Actions
• Match specific tool versions for consistency

This documentation provides a comprehensive reference that's automatically updated from actual workflow logs.

Documentation Location

The file is placed in scratchpad/ubuntu-runner-analysis.md as it's research/analysis content. If a different location is preferred (e.g., docs/ or research/), please let me know.

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Automatically generated by the Ubuntu Actions Image Analyzer workflow
Discovered from workflow run 21565035165

AI generated by Ubuntu Actions Image Analyzer

[github-actions]

✅ Draft issue creation
✅ Field creation
✅ Field update
✅ Issue addition
✅ PR addition
✅ Status update
✅ Scoping validation

Overall Status: PASS

AI generated by Smoke Project