# grammarly/rocker

Rocker breaks the limits of Dockerfile.

Repository: https://github.com/grammarly/rocker
Canonical: https://ross.abutalabs.com/products/grammarly-rocker
Language: Go
License: NOASSERTION
License Family: other
Archived: true
Last push: 2023-03-24T09:47:09+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4012, "days_push": 1258, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1331, forks 77 (observed 2026-08-28T04:04:24.289263+00:00)

## What it is
Rocker is a Go-based Docker build tool that extends Dockerfiles with advanced features like attachable build stages, caching, and templating. The project was officially discontinued in early 2018 as the container ecosystem matured.

## Use cases
- build docker images with advanced dockerfile features
- share artifacts between docker build stages
- speed up docker builds with better caching
- template dockerfiles with variables
- build docker images without docker build limitations

## When to choose
- you need rocker's unique features like attachable build stages not available in docker build
- you maintain an existing rocker-based build pipeline

## When to avoid
- starting a new project since it is discontinued and unmaintained
- you only need standard docker build features
- you want community support or bug fixes

## Facets
- artifact type: cli-tool
- maturity: abandoned
- function: build-tool, container-runtime, deployment, developer-tools
- domain: developer-tools
- platform: go, cli
- tags: dockerfile, docker-build, discontinued, build-system, devops, containers, linux, macos, docker

## Member repositories
- grammarly/rocker (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:24.289263+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:45:17.263595+00:00, confidence not recorded.
  - readme: https://github.com/grammarly/rocker (fetched 2026-08-28T04:04:24.289263+00:00, sha 4c7ecdf5caad)
- Data as of 2026-08-30T08:39:29.467469+00:00.