install

Additional install commands

macOS

Homebrewverified · 100%

brew install dockerfmt

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#dockerfmt

nixpkgs package indexes · pkgs/by-name/do/dockerfmt/package.nix · source: api.github.com

overview

Package summary

Dockerfile format and parser. a modern dockfmt

Project links

Commands and aliases

dockerfmt

history

Project history and usage

dockerfmt is a young, opinionated Dockerfile formatter that combines Dockerfile parsing with shell-command formatting for `RUN` instructions.

Project history

The reteps/dockerfmt repository was created in April 2025 and published its initial alpha release the next day. The README presents it as a modern successor to Jessie Frazelle's earlier `dockfmt`, built on the Moby BuildKit parser and using `shfmt` for shell fragments inside Dockerfile `RUN` steps.

The project quickly moved through 0.2.x releases in April 2025 and reached 0.5.4 in June 2026. The README's feature set includes whitespace normalization, inline-comment preservation, legacy `ENV key value` conversion, deprecated `MAINTAINER` conversion to `LABEL`, heredoc support, stdin/file operation, pre-commit support, JS/WASM bindings, and a Docker image for CI.

Adoption history

Because dockerfmt is new, public adoption evidence is still thin. Its package-manager footprint is nevertheless real: Homebrew reported stable version 0.5.4, 69 installs in the previous 30 days, and 548 installs in the previous year as of June 30, 2026.

Its adoption story is also a lineage story: it exists because Dockerfile formatting remained useful after `dockfmt`, while modern BuildKit syntax, shell formatting expectations, pre-commit workflows, and CI images needed a fresher implementation.

How it is used

Users run `dockerfmt Dockerfile` to print formatted output, `dockerfmt -w Dockerfile` to rewrite files, `dockerfmt -c Dockerfile` to check formatting, or pipe Dockerfiles through stdin. It can read EditorConfig properties such as `indent_size` and `insert_final_newline` when formatting files by path.

Why package nerds care

dockerfmt is package-nerd significant because formatters become part of project policy. By exposing a Go binary, Docker image, pre-commit hook, and JS/WASM bindings, it tries to make Dockerfile formatting usable from local editors, CI, JavaScript tooling, and ordinary package managers.

Timeline

2025: Repository created and 0.1.0-alpha initial release published.
2025: 0.2.x releases added JavaScript release work and bug fixes.
2026: 0.5.4 released and Homebrew formula reports stable 0.5.4.

Related projects

dockerfmt is directly related to `dockfmt`, Moby BuildKit's Dockerfile parser, and `shfmt`.
It also fits into pre-commit and CI formatting workflows, similar to language-specific formatters such as gofmt and prettier, but for Dockerfiles.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: ./.editorconfig
Windows: .\.editorconfig

executables

Installed executables

Command	Kind	Exposure	Note
`dockerfmt`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-09-19

manager version0.5.4

manager updated2026-09-12

local dataok

upstreamcurrent

latest detectedv0.5.4

https://github.com/reteps/dockerfmt

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:dockerfmt
Version	0.5.4
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/dockerfmt
Homepage	https://github.com/reteps/dockerfmt
Repository	https://github.com/reteps/dockerfmt
License	MIT
Source archive	https://github.com/reteps/dockerfmt/archive/refs/tags/v0.5.4.tar.gz
Last updated	2026-09-12T22:12:00Z
Pulse	updated
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	dockerfmt
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

dockerfmt

nix profile install nixpkgs#dockerfmt

normalized package name match
Matched by: Dockerfmt

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/do/dockerfmt/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/dockerfmt.yml

Used sources

Geiger risk classifier
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment
pkg.so package database
pkgdb category and tag curation

Install dockerfmt with Homebrew, Nix