P3GLEG/Whaler
Some data may be outdated — see provenance labels.
Program to reverse Docker images into Dockerfiles observed · 2026-09-24
Health v2 · maintenance only
53/100
- Activity 68
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3060
- days_rel: n/a
- days_push: 195
- n_releases_24m: 0
Adoption not part of the score
1192 stars · 103 forks observed · 2026-09-24
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Whaler is a Go CLI tool that reverse engineers Docker images back into the Dockerfiles that created them. It also extracts files added via ADD/COPY instructions, scans for potential secret files, and reports image metadata like exposed ports, run user, and environment variables.
Use cases
- reconstruct a Dockerfile from a docker image
- find secrets hidden in docker image layers
- extract files added by COPY or ADD instructions
- inspect environment variables and ports in an image
- audit third-party docker images before use
- analyze how a published image was built
When to avoid
- you need to build or lint Dockerfiles rather than reconstruct them from images
- you need runtime container scanning rather than static image analysis
- you want a GUI-based image explorer
Facets
cli-tool · maturity active
reverse-engineering security developer-tools cli security reverse-engineering developer-tools windows cli go docker-image-analysis dockerfile-reconstruction secret-detection container-security image-layers containers linux macos docker
1 source
- readme: https://github.com/P3GLEG/Whaler · fetched 2026-09-24 · bf7b9dadb06d
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| P3GLEG/Whaler | main | 53 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem