A tool to safely migrate GitHub Actions workflows to Ubuntu-slim runner
Details
- External ID
- 45936564
- Source
- HN
- Company
- —
- Product
- A tool to safely migrate GitHub Actions workflows to Ubuntu-slim runner
- Website domain
- github.com
- Launched
- Nov. 15, 2025
- Cohort
- —
- Upvotes
- 69
- Upvotes percentile
- 0.87117903930131
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
Hi HN!I’ve been running GitHub Actions workflows for a while, and when GitHub announced the new ubuntu-slim runners as a cheaper alternative to ubuntu-latest, I wanted to migrate—but figuring out which workflows are safe to switch turned out to be surprisingly tedious.You need to check for Docker usage, services, containers, step failures due to missing packages, and whether jobs rely on tools not available in the slim image.So I built gh-slimify, a GitHub CLI extension that automates all of this. It scans your repository, detects which jobs can be migrated, flags incompatible patterns, identifies missing commands, and can update only the safe workflows with a single command.gh extension install fchimpan/gh-slimify gh slimfy # Analyze workflows gh slimfy fix # Update only jobs that are safe to migrateIt’s open source (MIT). As a bonus: the README also includes an AI agent prompt that reproduces the same workflow-migration analysis—useful if you want to integrate the logic into an LLM agent or experiment with automated refactoring.I’d love feedback—especially on edge cases, false positives/negatives, or patterns it should detect better.
Enrichment
- Theme
- git and repository workflow tools
- Vertical
- Horizontal
- Function
- Workflow automation
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- migrate github actions workflows to ubuntu-slim runner
- Manually corrected
- False
Could you build this?
Yes This is a static analysis tool for YAML files that parses GitHub Actions workflows and checks if action dependencies or dependencies rely on pre-installed full Ubuntu packages.
Discussion
3 comments analyzed.
Concerns raised: Pricing not clearly documented or transparent, AI agent framing suggests unreliability
Competitors
Other products that read as similar to this one — 62 launches clear the similarity bar, closest 8 shown.
Attention rank: #6 of 63 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 7 days after the earliest competitor.
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- Lazyworktree, a TUI manager for Git worktrees · hn · 2026-01-03 · 9 upvotes · similarity 0.37
- Bitrise Build Hub · ph · 2026-09-24 · 174 upvotes · similarity 0.37
Other launches for this product
- No other launches for this product.
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